Psychology terms 2025 Flashcards
(475 cards)
1
Q
Psychology
A
The scientific study of the mind and behavior.
2
Q
Confirmation Bias
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The tendency to favor information that confirms existing beliefs.
3
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Hindsight Bias
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The tendency to believe, after learning an outcome, that one would have foreseen it.
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Overconfidence
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The tendency to be more confident than correct—to overestimate the accuracy of one’s beliefs and judgments.
5
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Empirical Evidence
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Information acquired by observation or experimentation.
6
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Scientific Method
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A systematic approach to research where a problem is identified, relevant data is gathered, a hypothesis is formulated from these data, and the hypothesis is empirically tested.
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Hypothesis
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A testable prediction, often implied by a theory.
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Falsifiable
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Capable of being disproved by experimental results.
9
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Peer Review
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A process by which something proposed (as for research or publication) is evaluated by a group of experts in the appropriate field.
10
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Replication
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The action of repeating a study, using the same methods to see if the original results can be consistently reproduced.
11
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Reliability
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The consistency of a research study or measuring test.
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Validity
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The extent to which a test measures or predicts what it is supposed to.
13
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The American Psychological Association (APA)
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A professional organization representing psychologists in the United States.
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Quantitative Data
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Information about quantities; that is, information that can be measured and written down with numbers.
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Qualitative Data
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Descriptive information, which often comes from interviews, focus groups, or artistic depictions such as photographs.
16
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Likert Scales
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A psychometric scale commonly used in questionnaires, and is the most widely used scale in survey research.
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Structured Interviews
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A quantitative research method where the interviewer a set sequence of questions.
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Survey Technique
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A research technique that involves the collection of information from a sample of individuals through their responses to questions.
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Wording Effect
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The effect that question phrasing and order have on survey data.
20
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Social Desirability Bias
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A tendency to give socially approved answers to questions about oneself.
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Self-report bias
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the tendency for individuals to misrepresent their thoughts, feelings, or behaviors when answering questions or providing information about themselves.
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Third Variable Problem
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A form of confounding in which a third variable leads to a mistaken causal relationship between two others.
23
Q
Scatterplot
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A graphical representation of the values of two variables for a set of data.
24
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Correlation Coefficient
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A statistical index of the relationship between two things (from -1 to +1). REMEMBER! Correlation is NOT causation. Correlations predict.
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Single-Blind Study
A study in which the participants do not know whether they are in the control group or the experimental group but the researchers do.
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Double-Blind Study
A study in which neither the participants nor the experimenters know who is receiving a particular treatment.
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Placebo effect
the phenomenon where individuals experience improvement in their condition solely because they believe they are receiving a beneficial treatment,
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Placebo group
The group that receives the placebo; the control group
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Placebo Condition
A condition in which treatment is not administered but the subject believes that it is administered.
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Sample
A subset of individuals from a larger population, used to conduct research.
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Representative Sample
A sample that accurately reflects the characteristics of the population as a whole.
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Random Sample
A sample that fairly represents a population because each member has an equal chance of inclusion.
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Sample Bias
A bias that occurs when a sample is collected in such a way that some members of the intended population are less likely to be included than others.
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Generalizability
The extent to which the results of a study can be generalized or extended to others.
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Negative Correlation
A relationship between two variables in which the variables move in opposite directions. For example, as one variable increases, the other decreases, indicating an inverse relationship.
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Positive Correlation
A relationship between two variables in which both variables move in the same direction. For example, as one variable increases, the other also increases, indicating a direct relationship.
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Directionality problem
the difficulty in determining which variable in a correlational study causes changes in the other, even when a correlation exists. CORRELATION DOES NOT EQUAL CAUSATION
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Experimental Method
A method of research where the researcher manipulates one variable, and controls/randomizes the rest of the variables.
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Independent Variable
The variable that is manipulated or controlled by the researcher.
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Dependent Variable
The variable that is tested and measured in an experiment.
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Confounding Variable
A variable that influences both the dependent variable and independent variable causing a spurious association.
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Operational Definitions
Specifically defining a variable in terms of how it is measured or manipulated in a study.
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Experimental Group
The group in an experiment that receives the variable being tested.
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Control Group
The group in an experiment that does not receive the test variable.
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Random Assignment
Assigning participants to experimental and control groups by chance, thus minimizing preexisting differences between those assigned to the different groups.
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Experimenter Bias
A process where the scientists performing the research influence the results, in order to portray a certain outcome.
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Statistics
A branch of mathematics dealing with the collection, analysis, interpretation, and presentation of masses of numerical data.
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Descriptive Statistics
Statistics that summarize the data collected in a study.
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Inferential Statistics
Statistics that allow one to make predictions and inferences about a population based on a sample of data.
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Measure of Central Tendency
A statistical measure that identifies a single value as representative of an entire distribution.
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Mean
The average of a set of numerical values.
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Median
The middle value in a list of numbers.
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Mode
The value that appears most often in a set of data.
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Range
The difference between the highest and lowest values in a dataset.
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Measures of variation
describe the spread or dispersion of data within a dataset, indicating how much scores deviate from the mean
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Normal Curve
A bell-shaped curve that represents a distribution of values, frequencies, or probabilities so that most measurements are concentrated around the middle.
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Standard Deviation
A measure of the amount of variation or dispersion in a set of values.
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Percentile Rank
The percentage of scores in its frequency distribution that are equal to or lower than it.
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Bimodal Distribution
A distribution that shows two different peaks or modes in the frequency of occurrences.
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Statistical Significance
This tells us if the result of an experiment is probably true or just happened by chance. It checks if what we found in our experiment would happen often, or is rare when we think nothing special is going on.
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Effect Sizes
This measures how big the impact of something is in an experiment. For example, it tells us how much a medicine really helps compared to not using the medicine at all.
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Ethical guidelines
ensuring voluntary participation, informed consent, protecting anonymity and confidentiality, minimizing potential harm, minimal deception and responsibly communicating results.
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protection from harm
the ethical obligation of researchers to safeguard participants from any physical or psychological harm, stress, or discomfort during research
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Minimal deception
using deception in research only when absolutely necessary, and when the deception is kept to a minimum level. It's a key ethical consideration where participants are subtly misled about the true purpose of the study, but not to a degree that would cause them significant distress or harm
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Regression to the Mean
The phenomenon that if a variable is extreme on its first measurement, it will tend to be closer to the average on its second measurement.
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Positive Skew
This happens when more numbers in a list are on the lower side, but a few really high numbers stretch the average higher.
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Negative Skew
This is when more numbers in a list are on the higher side, but a few really low numbers pull the average down.
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Institutional Review Boards (IRB)
A committee that reviews and approves research involving human subjects, ensuring that ethical standards are met.
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Informed Consent
Permission granted with the knowledge of the possible consequences, typically that which is given by a patient to a doctor for treatment with full knowledge of the possible risks and benefits.
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Informed Assent
Agreement by a minor or other parties not able to give legal consent to participate in the activity.
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Confidentiality
The requirement that private or sensitive information is not disclosed without the consent of the person who provided it.
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Deception
The act of misleading or wrongly informing someone about the true nature of a situation.
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Confederates
Individuals who appear to be participants in a study but are actually part of the research team.
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Debriefing
Providing participants in a study with a full explanation of the study after its completion, including the purpose and any deceptions used.
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Naturalistic Observation (Research method one)
Observations of subjects in their natural environments without any manipulation.
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Case Study (Research method two)
Intensive study of a single individual or group to explore specific phenomena.
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Correlational Research (Research method three)
Examines the relationship between two or more variables to determine association.
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Experimental Method (Research method four)
Manipulates one variable to determine its effect on another variable.
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Meta Analysis (Research method five)
A statistical analysis that combines the results of multiple scientific studies.
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Longitudinal Research
Research in which the same people are restudied and retested over a long period.
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Evolutionary Perspective
Looks at how human behaviors helped our ancestors survive and reproduce.
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Natural Selection
Process where traits that enhance survival and reproduction are passed on more frequently.
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Nature
The influence of genetic factors on traits and behaviors.
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Nurture
The influence of environmental factors on traits and behaviors.
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Twin Studies
Research comparing the similarities between identical and fraternal twins to understand the influence of genetics versus environment.
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Adoption Studies
Studies that compare biologically related people, including those raised apart, to understand genetic influences.
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Family Studies
Research looking at behavioral traits in families to determine how much is genetic versus environmental.
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Heredity
The passing of traits from parents to offspring through genes.
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Genetic Predisposition
The likelihood of developing certain traits or disorders based on genetics.
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Eugenics
A controversial and unethical movement aimed at improving the genetic composition of humans through selective breeding.
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Cerebral Cortex
The outer layer of the brain, involved in complex mental processes such as thinking.
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Hemispheres
the left and the right. These hemispheres are mirror images of each other and are connected by the corpus callosum, a thick bundle of nerves. While they function as a unified brain, each hemisphere also specializes in certain functions.
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Frontal Lobes
Involved in decision-making, problem-solving, and controlling behavior.
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Prefrontal Cortex
Part of the frontal lobes involved in planning complex behaviors and expressing personality. a region of the brain located in the frontal lobe, responsible for higher-level cognitive functions and executive functioning.
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Executive Functioning
Higher order processes including planning, organizing, and regulating behavior.
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Association areas
They're parts of the brain that take information from all over the place—like what we see, hear, smell, and touch—and put it together to help us understand the world around us.
(Wernicke's area, Brocas area etc...)
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Split brain research
investigates the functions of the brain's two hemispheres by studying individuals whose corpus callosum (the primary connection between the hemispheres) has been severed. This research reveals that each hemisphere has unique abilities, with the left hemisphere excelling at language and analytical tasks, and the right hemisphere specializing in spatial awareness and facial recognition
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Split brain research
refers to the different functions performed by the left and right hemispheres of the brain. The left hemisphere is generally dominant for language, speech, and logical/sequential tasks, while the right hemisphere excels in spatial reasoning, creativity, and emotional processing
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Motor Cortex
Controls voluntary movements.
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Somatosensory Cortex
Area of the parietal lobe that processes sensory input from various body parts.
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Parietal Lobes
Processes sensory information like touch and spatial awareness. (has association areas)
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Lobes of the cortex
Parietal, Occipital, Temporal, and Frontal
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Occipital Lobes
Responsible for vision.
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Temporal Lobes
Involved in hearing, memory, and understanding language.
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Corpus Callosum
Thick band of nerve fibers that connects the two brain hemispheres.
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Broca’s area
located in the left hemisphere of the brain, specifically in the frontal lobe, that is responsible for speech production and language processing.
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Wernicke’s area
region located in the left hemisphere of the brain, specifically in the temporal lobe, that is involved in language comprehension and understanding spoken and written language.
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Aphasia
The impairment of the ability to communicate either through oral or written discourse as a result of brain damage
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Reward Center
Brain areas that regulate the experience of pleasure.
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Brainstem
Supports basic life functions, including heart rate, breathing, and sleeping.
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Medulla
Part of the brainstem that controls vital life-sustaining functions like heartbeat and breathing.
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Reticular Activating System
Regulates wakefulness and sleep-wake transitions.
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Cerebellum
Coordinates voluntary movements like posture, balance, and coordination.
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Limbic System
Involved in emotion, motivation, and memory.
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Reward Center
Brain areas that regulate the experience of pleasure.
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Thalamus
Relay motor and sensory signals to the cerebral cortex.
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Hypothalamus
Regulates body temperature, hunger, thirst, and other homeostatic systems.
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Pituitary Gland
The master gland of the endocrine system that regulates other glands.
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Hippocampus
Essential for learning and memory.
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Amygdala
Involved in emotion processing, particularly fear and aggression.
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Nervous System
The body's communication network consisting of nerve cells.
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Central Nervous System
Consists of the brain and spinal cord.
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Peripheral Nervous System
The sensory and motor neurons that connect the central nervous system to the rest of the body.
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Autonomic Nervous System
Controls involuntary bodily functions.
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Sympathetic Nervous System
Activates the body's resources during stress and emergencies.
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Parasympathetic Nervous System
Conserves energy and restores the body to a calm state.
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Somatic Nervous System
Controls voluntary movements.
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Neurons
Nerve cells that transmit information throughout the body.
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Glial Cells
Support cells in the nervous system.
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Motor Neurons
Carry signals from the spinal cord to muscles to produce movement.
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Sensory Neurons
Carry signals from body parts to the central nervous system.
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Interneurons
Connect sensory and motor neurons and carry impulses between them.
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Reflex Arc
The nerve pathway involved in a reflex action.
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Neural Transmission
The process by which neurons communicate with each other.
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Threshold
The level of stimulation required to trigger a neural impulse.
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Action Potential
A neural impulse; a brief electrical charge that travels down an axon.
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All-or-Nothing Principle
The rule that neurons are either on or off.
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Depolarization
A decrease in the electrical charge across a cell membrane.
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Refractory Period
A period immediately following stimulation during which a nerve or muscle is unresponsive to further stimulation.
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Resting Potential
The state of the neuron when not firing a neural impulse.
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Reuptake
The absorption by a presynaptic nerve ending of a neurotransmitter that it has secreted.
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Consciousness
The awareness of internal and external stimuli.
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Circadian Rhythm (Sleep/Wake Cycle)
The body's natural 24-hour cycle, affecting sleep and wakefulness.
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Jet Lag
Fatigue caused by travel across different time zones, disrupting the circadian rhythm.
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Shift Work
Employment with work hours scheduled at non-standard times.
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NREM Stage 1
The initial stage of sleep, characterized by light sleep and slow eye movement.
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Hypnagogic Sensations
Feelings of falling or hearing strange noises as one falls asleep during NREM Stage 1.
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NREM Stage 2
The second stage of sleep, where body temperature drops and heart rate slows.
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NREM Stage 3
The deepest and most restorative sleep stage; includes slow-wave sleep.
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REM Sleep
A sleep stage marked by rapid eye movement and dreaming; brain waves are similar to wakefulness.
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REM Rebound
The tendency for REM sleep to increase following REM sleep deprivation.
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Activation-Synthesis (Dreams)
A theory suggesting dreams are caused by the brain's attempt to make sense of neural activity during sleep.
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Consolidation Theory (Dreams)
The theory that dreams help to cement memories and learning.
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Memory Consolidation
The process by which temporary memories are converted into a stable form.
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Restoration of Resources
The theory that sleep helps to restore physical and mental resources depleted during wakefulness.
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Insomnia
Difficulty falling or staying asleep.
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Narcolepsy
A disorder characterized by sudden and uncontrollable episodes of deep sleep.
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REM Sleep Behavior Disorder
A sleep disorder where individuals act out vivid dreams with physical movements.
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Sleep Apnea
A disorder where breathing repeatedly stops and starts during sleep.
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Somnambulism
Sleepwalking, typically occurring during deep sleep.
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Psychoactive Drugs
Substances that affect the mind, altering consciousness, perception, or mood.
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Agonists
Drugs that increase the action of a neurotransmitter.
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Antagonists
Drugs that block the action of a neurotransmitter.
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Reuptake Inhibitors
Drugs that block the reabsorption of neurotransmitters, increasing their levels.
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Stimulants
Drugs that increase brain activity, such as caffeine and cocaine.
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Caffeine
A mild stimulant found in coffee, tea, and some sodas.
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Cocaine
A powerful stimulant that affects the central nervous system.
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Depressants
Substances that reduce neural activity and slow body functions, like alcohol.
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Alcohol
A depressant that is commonly used and socially accepted but can impair reasoning and motor skills.
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Hallucinogens
Drugs that cause perceptual distortions and heightened sensory experiences.
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Marijuana
A commonly used hallucinogen that also has some depressant and stimulant effects.
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Opioids
Drugs that act on the nervous system to relieve pain; includes heroin.
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Heroin
An opioid drug that causes euphoria but is highly addictive and dangerous.
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Tolerance
A condition in which more of a drug is needed to achieve the same effect.
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Addiction
A psychological and physical inability to stop consuming a chemical, drug, activity, or substance.
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Withdrawal
Symptoms that occur after stopping or reducing intake of a drug to which one has become addicted.
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Sensation
The process by which sensory receptors receive and represent stimulus energies from our environment.
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Transduction
The conversion of one form of energy into another. In sensory processing, it refers to transforming stimulus energies into neural impulses.
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Perception
The process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events.
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Absolute Threshold
The minimum stimulus intensity required to detect a stimulus 50% of the time.
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Just-noticeable Difference (JND)
The smallest difference in stimulus intensity that a specific sense can detect.
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Sensory Adaptation
Adjustment in sensory capacity after prolonged exposure to unchanging stimuli.
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Weber's Law
The principle that to perceive their difference, two stimuli must differ by a constant proportion, not a constant amount.
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Synesthesia
A condition in which one sense is simultaneously perceived as if by one or more additional senses.
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Retina
The light-sensitive layer of tissue at the back of the eye.
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Blind Spot
The point at which the optic nerve leaves the eye, creating a 'blind' spot because no receptor cells are located there.
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Visual Nerve
Another term for the optic nerve that carries neural impulses from the eye to the brain.
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Lens
The transparent structure behind the pupil that changes shape to help focus images on the retina.
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Accommodation
The process by which the eye's lens changes shape to focus near or far objects on the retina.
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Nearsightedness
A condition in which nearby objects are seen more clearly than distant objects.
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Farsightedness
A condition in which far objects are seen more clearly than near objects.
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Photoreceptors
Cells in the retina that respond to light.
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Rods
Photoreceptors that detect black, white, and gray; necessary for peripheral and twilight vision.
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Cones
Photoreceptors that detect color and detail, functioning in daylight or well-lit conditions.
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Trichromatic Theory
The theory that the retina contains three different color receptors—one most sensitive to red, one to green, one to blue—which, when stimulated in combination, can produce the perception of any color.
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Opponent-process Theory
The theory that opposing retinal processes enable color vision.
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Afterimages
Images that occur when a visual sensation persists for a brief time even after the original stimulus is removed.
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Fovea
The central focal point in the retina, around which the eye's cones cluster.
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Ganglion Cells
Neurons that relay information from the retina to the brain via the optic nerve.
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Wavelength
The distance between successive peaks of a wave, typically used in physics and communications to specify wave frequencies.
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Pitch
A tone's experienced highness or lowness; depends on frequency.
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Amplitude
The height of a wave, determining the loudness of sounds.
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Loudness
A sound's intensity.
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Pitch Perception
How high or low a sound seems.
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Place Theory
The theory that links the pitch we hear with the place where the cochlea's membrane is stimulated.
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Volley Theory
The theory that frequencies of sound are coded by the rate of firing of neurons in the auditory nerve.
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Frequency Theory
The theory that the rate of nerve impulses traveling up the auditory nerve matches the frequency of a tone, enabling us to sense its pitch.
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Sound Localization
The process by which the location of sound is determined.
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Conduction Deafness
Hearing loss caused by damage to the mechanical system that conducts sound waves to the cochlea.
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Sensorineural Deafness
Hearing loss caused by damage to the cochlea's receptor cells or to the auditory nerves.
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Hindbrain
The lowest segment of the brain, primarily involved in the regulation of basic bodily functions and consisting of the cerebellum, medulla, pons, and reticular formation.
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Midbrain
The middle segment of the brain, involved with motor control, vision, hearing, arousal, sleep, temperature regulation, and the transmission of sensory information.
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Forebrain
The highest segment of the brain, consisting of the thalamus, hypothalamus, hippocampus, amygdala, and cerebrum.
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Perception
The process of organizing and interpreting sensory information to make it meaningful.
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Bottom-up Processing
Analysis that starts at the sensory level and works up to higher levels of processing.
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Top-down Processing
Information processing guided by higher-level mental processes, as when we construct perceptions drawing on our experience and expectations.
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Schema
A concept or framework that organizes and interprets information.
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Perceptual Set
A predisposition to perceive things in a certain way.
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Gestalt Psychology
An approach to psychology that emphasizes that the whole is different from the sum of its parts.
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Closure
The perceptual tendency to fill in gaps in order to perceive a complete image.
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Proximity
Objects that are close to each other tend to be perceived as belonging together.
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Similarity
Objects that are similar in appearance are more likely to be perceived as belonging together.
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Figure and Ground
The organization of the visual field into objects (figures) that stand out from their surroundings (ground).
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Attention
Focusing awareness on a narrowed range of stimuli or events.
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Selective Attention
The focusing of conscious awareness on a particular stimulus.
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Cocktail Party Effect
The ability to focus one's auditory attention on a particular stimulus while filtering out a range of other stimuli, much like tuning into a single voice at a noisy party.
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Inattentional Blindness
Failing to see visible objects when our attention is directed elsewhere.
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Change Blindness
Failing to notice changes in the environment.
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Binocular Depth Cues
Depth cues, such as retinal disparity, that depend on the use of two eyes.
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Retinal Disparity
A binocular cue for perceiving depth: By comparing images from the retinas in the two eyes, the brain computes distance—the greater the disparity (difference) between the two images, the closer the object.
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Convergence
A binocular cue for perceiving depth; the extent to which the eyes converge inward when looking at an object.
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Monocular Depth Cues
Depth cues, such as interposition and linear perspective, available to either eye alone.
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Relative Size
If two objects are known to be of similar size, we perceive the one that casts a smaller retinal image as farther away.
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Texture Gradient
The tendency for textured surfaces to appear to become smaller and finer as distance from the viewer increases.
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Linear Perspective
Parallel lines, such as railroad tracks, appear to converge with distance. The more the lines converge, the greater their perceived distance.
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Interposition
If one object partially blocks our view of another, we perceive it as closer.
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Perceptual Constancies
Perceiving objects as unchanging (having consistent shapes, size, and color) even as illumination and retinal images change.
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Availability Heuristic
Estimating the likelihood of events based on their availability in memory; if instances come readily to mind (perhaps because of their vividness), we presume such events are common.
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Mental Set
A tendency to approach a problem in one particular way, often a way that has been successful in the past.
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Priming
The activation, often unconsciously, of certain associations, thus predisposing one's perception, memory, or response.
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Framing
The way an issue is posed; how an issue is framed can significantly affect decisions and judgments.
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Gambler's Fallacy
The fallacy of thinking that future probabilities are altered by past events, when in reality they are unchanged. The fallacy lies in the belief that a departure from what occurs on average or in the short term will be corrected in the short term.
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Sunk-cost Fallacy
Making decisions about a current situation based on what one has previously invested in the situation.
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Executive Functions
Higher order thinking processes that include planning, organizing, inhibition, and decision-making.
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Creativity
The ability to produce novel and valuable ideas.
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Divergent Thinking
Expanding the number of possible problem solutions; creative thinking that diverges in different directions.
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Convergent Thinking
Narrowing the available problem solutions to determine the single best solution.
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Functional Fixedness
The tendency to think of things only in terms of their usual functions; an impediment to problem solving.
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Testing Effect
Enhanced performance on a memory test caused by being tested on the material to be remembered.
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Metacognition
Thinking about thinking. It refers to the processes used to plan, monitor, and assess one's understanding and performance.
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Intelligence
Mental quality consisting of the ability to learn from experience, solve problems, and use knowledge to adapt to new situations.
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Apparent Movement
The perception that a stationary object is moving.
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Prototypes
A mental image or best example of a category. Matching new items to a prototype provides a quick and easy method for sorting items into categories.
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Assimilation
Interpreting new experiences in terms of existing schemas.
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Accommodation
Adapting one's current understandings (schemas) to incorporate new information.
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Algorithms
A methodical, logical rule or procedure that guarantees solving a particular problem. Contrasts with the usually speedier—but also more error-prone—use of heuristics.
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Heuristics
A simple thinking strategy that often allows us to make judgments and solve problems efficiently; usually speedier but also more error-prone than algorithms.
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Representativeness Heuristic
Judging the likelihood of things in terms of how well they seem to represent, or match, particular prototypes; may lead us to ignore other relevant information.
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Construct Validity
The extent to which there is evidence that a test measures a particular hypothetical construct.
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Predictive Validity
The success with which a test predicts the behavior it is designed to predict; it is assessed by computing the correlation between test scores and the criterion behavior.
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Reliability
The extent to which a test yields consistent results, as assessed by the consistency of scores on two halves of the test, on alternative forms of the test, or on retesting.
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Test-Retest Reliability
A method for determining the reliability of a test by comparing a test taker's scores on the same test taken on separate occasions.
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Split-Half Reliability
A measure of reliability in which a test is split into two parts and an individual's scores on both halves are compared.
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Stereotype Threat
A self-confirming concern that one will be evaluated based on a negative stereotype.
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Stereotype Lift
When awareness of positive expectations improves performance on tasks.
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Flynn Effect
The rise in average IQ scores that has occurred over the decades in many nations.
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Achievement Tests
Tests designed to assess what a person has learned.
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Aptitude Tests
Tests designed to predict a person's future performance; aptitude is the capacity to learn.
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Fixed Mindset
The belief that abilities are fixed and unchangeable.
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Growth Mindset
The belief that abilities can be developed through dedication and hard work.
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Explicit Memory
Memory of facts and experiences that one can consciously know and "declare."
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Episodic Memory
The ability to recall and mentally re-experience specific episodes from one's personal past.
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Semantic Memory
Memory for factual information.
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Implicit Memory
Retention of learned skills or classically conditioned associations independent of conscious recollection.
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Procedural Memory
A type of implicit memory that involves motor skills and behavioral habits.
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g (General Intelligence)
A factor that, according to Spearman and others, underlies specific mental abilities and is therefore measured by every task on an intelligence test.
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Multiple Intelligences
Theory proposed by Howard Gardner that suggests that there are eight distinct spheres of intelligence.
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Intelligence Quotient (IQ)
Defined originally as the ratio of mental age (ma) to chronological age (ca) multiplied by 100 (thus, IQ = ma/ca × 100). On contemporary intelligence tests, the average performance for a given age is assigned a score of 100.
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Mental Age
A measure of intelligence test performance devised by Binet; the chronological age that most typically corresponds to a given level of performance. Thus, a child who does as well as the average 8-year-old is said to have a mental age of 8.
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Chronological Age
The age of an individual expressed as time elapsed since birth.
281
Standardization
Defining uniform testing procedures and meaningful scores by comparison with the performance of a pretested group.
282
Multi-Store Model of Memory
A model that describes memory as consisting of three distinct stages: sensory memory, short-term memory, and long-term memory.
283
Sensory Memory
The immediate, very brief recording of sensory information in the memory system.
284
Iconic Memory
A momentary sensory memory of visual stimuli; a photographic or picture-image memory lasting no more than a few tenths of a second.
285
Echoic Memory
A momentary sensory memory of auditory stimuli; if attention is elsewhere, sounds and words can still be recalled within 3 or 4 seconds.
286
Short-Term Memory
Activated memory that holds a few items briefly, such as the seven digits of a phone number while dialing, before the information is stored or forgotten.
287
Long-Term Memory
The relatively permanent and limitless storehouse of the memory system. Includes knowledge, skills, and experiences.
288
Automatic Processing
Unconscious encoding of incidental information, such as space, time, and frequency, and of well-learned information, such as word meanings.
289
Effortful Processing
Encoding that requires attention and conscious effort.
290
Encoding
The processing of information into the memory system—for example, by extracting meaning.
291
Storage
The retention of encoded information over time.
292
Retrieval
The process of getting information out of memory storage.
293
Levels of Processing Model
This model of memory suggests that memory retention is directly related to the depth of mental processing, with deeper processing producing better recall.
294
Shallow Encoding
Processing information based on its surface characteristics.
295
Deep Encoding
Processing information based on its meaning.
296
Structural Encoding
Shallow processing that emphasizes the physical structure of the stimulus.
297
Phonemic Encoding
Encoding of sounds, especially the sounds of words.
298
Prospective Memory
Remembering to perform a future action at the appropriate time that you previously intended to accomplish.
299
Long-term Potentiation
An increase in a cell's firing potential after brief, rapid stimulation. Believed to be a neural basis for learning and memory.
300
Working Memory Model
An updated version of short-term memory that involves conscious, active processing of incoming auditory and visual-spatial information, and of information retrieved from long-term memory.
301
Central Executive
The part of working memory that directs attention and processing.
302
Phonological Loop
The part of working memory that holds and processes verbal and auditory information.
303
Visuospatial Sketchpad
The part of working memory that holds and processes visual and spatial information.
304
Massed Practice
Cramming information all at once. It is less effective than spreading learning over time.
305
Distributed Practice
Spreading out study sessions over time with breaks in between. This practice leads to better memorization and recall.
306
Serial Position Effect
Our tendency to recall best the last and first items in a list.
307
Primacy Effect
The tendency to remember words at the beginning of a list especially well.
308
Recency Effect
The tendency to remember words at the end of a list especially well.
309
Maintenance Rehearsal
Repeating stimuli in their original form to retain them in short-term memory.
310
Elaborative Rehearsal
The linking of new information to material that is already known
311
Memory Retention
The ability to retain information over time through the storage and retrieval of information.
312
Autobiographical Memory
A special form of episodic memory, consisting of a person's recollections of his or her life experiences.
313
Retrograde Amnesia
An inability to retrieve information from one's past.
314
Anterograde Amnesia
An inability to form new memories.
315
Alzheimer's Disease
A progressive and irreversible brain disorder characterized by gradual deterioration of memory, reasoning, language, and, finally, physical functioning.
316
Infantile Amnesia
The inability to remember events from early childhood.
317
Retrieval
The process of getting information out of memory storage.
318
Recall
A measure of memory in which the person must retrieve information learned earlier, as on a fill-in-the-blank test.
319
Recognition
A measure of memory in which the person need only identify items previously learned, as on a multiple-choice test.
320
Retrieval Cues
Stimuli that aid the recall or recognition of information stored in memory.
321
Context-Dependent Memory
Improved recall of specific episodes or information when the context present at encoding and retrieval are the same.
322
Semantic Encoding
The encoding of meaning, including the meaning of words.
323
Mnemonic Devices
Memory aids, especially those techniques that use vivid imagery and organizational devices.
324
Method of Loci
A mnemonic device that involves imagining placing items you want to remember along a route you know well, or in specific locations in a familiar room or building.
325
Chunking
Organizing items into familiar, manageable units; often occurs automatically.
326
Categories
Grouping items into categories that share similar characteristics.
327
Hierarchies
Systems in which concepts are arranged from more general to more specific classes.
328
Spacing Effect
The tendency for distributed study or practice to yield better long-term retention than is achieved through massed study or practice.
329
Memory Consolidation
The neural storage of a long-term memory.
330
Proactive Interference
The disruptive effect of prior learning on the recall of new information.
331
Retroactive Interference
The disruptive effect of new learning on the recall of old information.
332
Tip-of-the-Tongue Phenomenon
The temporary inability to remember something you know, accompanied by a feeling that it's just out of reach.
333
Repression
In psychoanalytic theory, the basic defense mechanism that banishes from consciousness anxiety-arousing thoughts, feelings, and memories.
334
Misinformation Effect
Incorporating misleading information into one's memory of an event.
335
Source Amnesia
Attributing to the wrong source an event we have experienced, heard about, read about, or imagined. Also called source misattribution.
336
Constructive Memory
Memory that is constructed from inferences as well as input information, which can be affected by biases and other influences.
337
Memory Consolidation
The process by which memories become stable in the brain.
338
Imagination Inflation
A memory phenomenon in which vividly imagining an event markedly increases confidence that the event actually occurred.
339
Mood-Congruent Memory
The tendency to recall experiences that are consistent with one's current good or bad mood.
340
State-Dependent Memory
The theory that information learned in a particular state of mind (e.g., depressed, happy, somber) is more easily recalled when in that same state of mind.
341
Testing Effect
Enhanced performance on a memory test caused by being tested on the material to be remembered.
342
Metacognition
Thinking about thinking. It refers to the processes used to plan, monitor, and assess one's understanding and performance.
343
The Forgetting Curve
A graph showing retention and forgetting over time.
344
Encoding Failure
The failure to process information into memory.
345
Behavioral Perspective
Focuses on observable behaviors and the ways they're learned.
346
Associative Learning
Learning that involves connecting certain stimuli or events that occur together in the environment.
347
Habituation (Non-Associative Learning)
Decreased response to a repeated stimulus over time.
348
Classical Conditioning
A learning process that pairs a neutral stimulus with a stimulus that elicits a reflexive response until the neutral stimulus alone elicits that response.
349
Unconditioned Stimulus (UCS)
A stimulus that naturally and automatically triggers a response without conditioning.
350
Unconditioned Response (UR)
The natural reaction to an unconditioned stimulus.
351
Conditioned Stimulus (CS)
A previously neutral stimulus that, after becoming associated with the unconditioned stimulus, eventually comes to trigger a conditioned response.
352
Conditioned Response (CR)
A learned response to a previously neutral stimulus that becomes conditioned.
353
Acquisition
The initial stage in classical conditioning during which association between a neutral stimulus and an unconditioned stimulus is learned.
354
Extinction
The diminishing of a conditioned response when the conditioned stimulus no longer follows the unconditioned stimulus.
355
Spontaneous Recovery
The reappearance, after a pause, of an extinguished conditioned response.
356
Stimulus Discrimination
Learning to respond only to the original stimulus, and not to other similar stimuli.
357
Stimulus Generalization
The tendency to respond to stimuli that are similar to the conditioned stimulus.
358
Higher-Order Conditioning
A procedure in which the conditioned stimulus in one conditioning experience is paired with a new neutral stimulus, creating a second (often weaker) conditioned stimulus.
359
Counterconditioning
A behavior therapy procedure that uses classical conditioning to evoke new responses to stimuli that are triggering unwanted behaviors.
360
Taste Aversion
The intense dislike and/or avoidance of particular foods that have been associated with nausea or discomfort.
361
One-Trail Conditioning
Conditioning that occurs with only one pairing of a neutral stimulus and an unconditioned stimulus.
362
Biological Preparedness
The propensity of living beings to learn certain associations, such as taste and nausea, with only one or few pairings due to the survival value of the learning.
363
Operant Conditioning
A method of learning that occurs through rewards and punishments for behavior.
364
The Law of Effect
Thorndike's principle that behaviors followed by favorable consequences become more likely, and behaviors followed by unfavorable consequences become less likely.
365
Reinforcement
In operant conditioning, any event that strengthens the behavior it follows.
366
Primary Reinforcers
Events that are inherently reinforcing because they satisfy biological needs.
367
Secondary Reinforcers
Events that acquire reinforcing qualities through their association with primary reinforcers.
368
Reinforcement Discrimination
Occurs when an organism learns to make a response in the presence of one stimulus but not another.
369
Reinforcement Generalization
The spread of a response to stimuli similar to the one that was conditioned.
370
Punishment
An event that tends to decrease the behavior that it follows.
371
Positive Reinforcement
Increasing behaviors by presenting positive stimuli, such as food.
372
Negative Reinforcement
Increasing behaviors by stopping or reducing negative stimuli, such as shock.
373
Positive Punishment
The administration of a stimulus to decrease the probability of a behavior's recurring.
374
Negative Punishment
The removal of a stimulus to decrease the probability of a behavior's recurring.
375
Shaping
A conditioning paradigm used primarily in the experimental analysis of behavior.
376
Instinctive Drift
The tendency of an animal to revert to instinctive behaviors that interfere with a conditioned response.
377
Superstitious Behavior
Behavior that increases in frequency because its occurrence is accidentally paired with the delivery of a reinforcer.
378
Reinforcement Schedules
A rule stating which instances of a behavior will be reinforced.
379
Continuous Reinforcement
Reinforcing the desired response every time it occurs.
380
Partial Reinforcement
Reinforcing a response only part of the time; results in slower acquisition of a response but much greater resistance to extinction than does continuous reinforcement.
381
Fixed Interval
A reinforcement schedule that reinforces a response only after a specified time has elapsed.
382
Variable Interval
A reinforcement schedule that reinforces a response at unpredictable time intervals.
383
Fixed Ratio
A reinforcement schedule that reinforces a response only after a specified number of responses.
384
Variable Ratio
A reinforcement schedule that reinforces a response after an unpredictable number of responses.
385
Learned Helplessness
The hopelessness and passive resignation an animal or human learns when unable to avoid repeated aversive events.
386
Social Learning Theory
The theory that we learn social behavior by observing and imitating and by being rewarded or punished.
387
Vicarious Conditioning
Learning that occurs through observing the reactions of others to an environmental stimulus.
388
Insight Learning
A form of problem solving in which the organism develops a sudden insight into or understanding of a problem's solution.
389
Latent Learning
Learning that occurs but is not apparent until there is an incentive to demonstrate it.
390
Cognitive Maps
A mental representation of the layout of one's environment.
391
Developmental Psychology
The study of continuity and change across the life span.
392
Stability and Change
The debate regarding which traits persist through the lifespan and which change.
393
Nature and Nurture
The longstanding discussion about the relative importance of genetics (nature) and environment (nurture) in their influence on behavior and mental processes.
394
Continuous Development
The view that development is a cumulative process: gradually improving on existing skills.
395
Discontinuous Development
The view that development takes place in unique stages, which happen at specific times or ages.
396
Cross-sectional Research
A study in which people of different ages are compared with one another.
397
Teratogens
Agents, such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and cause harm.
398
Milestones
Important markers of development such as walking, talking, and grasping objects.
399
Prenatal Development
The process that occurs between the formation of the zygote and birth.
400
Fine Motor Coordination
The ability to make movements using the small muscles in our hands and wrists.
401
Gross Motor Coordination
The ability to make movements using the large muscles in our arms, legs, and torso.
402
Maturation
Biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience.
403
Reflexes
Automatic responses to sensory stimuli, like the knee-jerk response.
404
Rooting Reflex
A baby's tendency, when touched on the cheek, to turn toward the touch, open the mouth, and search for the nipple.
405
Visual Cliff
A laboratory device for testing depth perception in infants and young animals.
406
Critical Periods
An optimal period shortly after birth when an organism's exposure to certain stimuli or experiences produces proper development.
407
Sensitive Periods
Times in development when a person is particularly open to certain kinds of experiences.
408
Imprinting
The process by which certain animals form strong attachments during an early-life critical period.
409
Growth Spurt
A rapid increase in height and weight that occurs during puberty.
410
Puberty
The period of sexual maturation, during which a person becomes capable of reproducing.
411
Primary Sex Characteristics
The body structures (ovaries, testes, and external genitalia) that make sexual reproduction possible.
412
Secondary Sex Characteristics
Nonreproductive sexual traits, such as female breasts and hips, male voice quality, and body hair.
413
Menarche
The first menstrual period.
414
Spermarche
The first ejaculation.
415
Menopause
The natural cessation of menstruation that also marks the end of reproductive capacity in women.
416
Jean Piaget
A Swiss psychologist known for his theory of cognitive development that describes how children construct a mental model of the world.
417
Schemas
Frameworks that help organize and interpret information.
418
Assimilation
The process by which new information is incorporated into pre-existing schemas.
419
Accommodation
The process by which schemas are altered to fit new information.
420
Sensorimotor Stage
The stage (from birth to about 2 years of age) during which infants know the world mostly in terms of their sensory impressions and motor activities.
421
Object Permanence
The awareness that things continue to exist even when not perceived.
422
Preoperational Stage
The stage (from about 2 to 6 or 7 years of age) during which a child learns to use language but does not yet comprehend the mental operations of concrete logic.
423
Mental Symbols
Objects or events that a child knows and can think about, even if they are not physically present.
424
Pretend Play
Play that involves making up and acting out a scenario; typically observed during the preoperational stage.
425
Conservation
The principle (which Piaget believed was a part of concrete operational reasoning) that properties such as mass, volume, and number remain the same despite changes in the forms of objects.
426
Reversibility
The ability to recognize that numbers or objects can be changed and returned to their original condition.
427
Animism
The belief that objects that are inanimate have feelings, thoughts, and have the mental characteristics and qualities of living things.
428
Egocentrism
The preoperational child's difficulty taking another's point of view.
429
Theory of Mind
The ability to understand that others have their own thoughts and perspectives.
430
Concrete Operational Stage
The stage of cognitive development (from about 7 to 11 years of age) during which children gain the mental operations that enable them to think logically about concrete events.
431
Formal Operational Stage
The stage of cognitive development (normally beginning about age 12) during which people begin to think logically about abstract concepts.
432
Lev Vygotsky
A psychologist known for his sociocultural theory of cognitive development, emphasizing how culture and social interactions guide cognitive development.
433
Scaffolding
A technique used by a teacher to adapt their support methods to fit the student's current level of performance, gradually decreasing the guidance as the student becomes more competent.
434
Zone of Proximal Development
The difference between what a learner can do without help and what they can do with help.
435
Ecological Systems Theory
A theory introduced by Bronfenbrenner that explains how the inherent qualities of a child and their environment interact to influence how they will grow and develop.
436
Microsystem
The environment where an individual lives. These contexts include the person's family, peers, school, and neighborhood. It is the immediate environment in which a person is operating.
437
Mesosystem
The relations between microsystems or connections between contexts.
438
Exosystem
External environmental settings that only indirectly affect development, such as parent's workplace.
439
Macrosystem
The larger cultural context, including socioeconomic status, wealth, poverty, and ethnicity.
440
Chronosystem
The patterning of environmental events and transitions over the life course, as well as sociohistorical circumstances.
441
Authoritarian Parenting
A parenting style characterized by high demands and low responsiveness. Parents with an authoritarian style have very high expectations of their children, yet provide very little in the way of feedback and nurturance.
442
Authoritative Parenting
A parenting style characterized by high responsiveness and high demands. Authoritative parents are responsive to the child's emotional needs while having high standards.
443
Permissive Parenting
A type of parenting style characterized by low demands with high responsiveness. Permissive parents tend to be very loving, yet provide few guidelines and rules.
444
Attachment Styles
Patterns of attachment, defined as lasting psychological connectedness between human beings.
445
Secure Attachment
An attachment style characterized by trust, a lack of concern with being abandoned, and the view that one is worthy and well liked.
446
Insecure Attachment
An attachment style characterized by a concern that others will not reciprocate one's desire for intimacy, resulting in higher-than-average levels of anxiety and avoidance.
447
Avoidant Attachment
An attachment style characterized by difficulty developing intimate relationships because previous attempts to be intimate have been rebuffed.
448
Anxious Attachment
An attachment style characterized by a concern that others will not reciprocate one's desire for intimacy, resulting in frequent anxiety.
449
Disorganized Attachment
An attachment style characterized by a lack of clear attachment behavior, signals, and responses.
450
Temperament
Basic emotional style that appears early in development and is largely genetic in origin.
451
Separation Anxiety
Emotional distress seen in many infants when they are separated from people with whom they have formed an attachment.
452
Contact Comfort
The physical and emotional comfort that an infant receives from being in physical contact with its mother.
453
Parallel Play
Activity in which children play side by side without interacting.
454
Pretend Play
Play involving imaginary people and situations; also called fantasy play, dramatic play, or imaginative play.
455
Imaginary Audience
Adolescents' belief that they are the focus of everyone else's attention and concern.
456
Personal Fable
Adolescents' belief that they are special and unique, so much so that none of life's difficulties or problems will affect them regardless of their behavior.
457
Social Clock
The culturally preferred timing of social events such as marriage, parenthood, and retirement.
458
Emerging Adulthood
A period from about age 18 to the mid-twenties, when many in Western cultures are no longer adolescents but have not yet achieved full independence as adults.
459
Stage Theory of Psychosocial Development (Erikson)
A theory that identifies eight stages in which a healthy developing individual should pass through from infancy to late adulthood.
460
Trust vs. Mistrust
The first stage of Erik Erikson's theory centers around the infant's basic needs being met by the parents.
461
Autonomy vs. Shame and Doubt
The second stage of Erik Erikson's stages of human development in which toddlers develop independence and personal agency.
462
Initiative vs. Guilt
The third stage of Erik Erikson's theory of psychosocial development, where the child finds independence in planning, playing, and other activities.
463
Industry vs. Inferiority
The fourth stage of Erik Erikson's theory of psychosocial development. The stage occurs during childhood between the ages of approximately six and eleven.
464
Identity vs. Role Confusion
The fifth stage of Erik Erikson's theory of psychosocial development. This stage plays an essential role in developing a sense of personal identity which will continue to influence behavior and development for the rest of a person's life.
465
Intimacy vs. Isolation
The sixth stage of Erik Erikson's theory of psychosocial development. This stage explores relationships leading toward longer-term commitments with someone other than a family member.
466
Generativity vs. Stagnation
Erik Erikson's seventh stage of psychosocial development, wherein middle-aged adults find meaning in contributing to the development of younger individuals.
467
Integrity vs. Despair
The eighth and final stage of Erik Erikson's stage theory of psychosocial development, occurring in late adulthood. This stage involves reflecting on one's life and either moving into feeling satisfied and happy with one's life or feeling a deep sense of regret.
468
Adverse Childhood Experiences (ACEs)
Potentially traumatic events that occur in childhood (0-17 years) such as experiencing violence, abuse, or neglect, witnessing violence in the home or community, or having a family member attempt or die by suicide.
469
Achievement (adolescent development)
Typically refers to the attainment of educational qualifications, professional development, or success in a particular career or field.
470
Diffusion (adolescent development)
In terms of identity development, refers to an apathy toward identity exploration; no commitment to roles or ideologies.
471
Foreclosure (adolescent development)
The identity status of a person who has not engaged in any identity experimentation and has established an identity based on the choices or values of others.
472
Moratorium (adolescent development)
The identity status of individuals who are in the midst of an identity crisis but who have not made a clear commitment to an identity.
473
Possible Selves
The component of self-concept that involves individuals' ideas of what they might become, what they would like to become, and what they are afraid of becoming.
474
Modeling
Learning by observing and imitating the behaviors of others.
475
Convenience sampling
involves selecting participants based on their availability and accessibility to the researcher.
