Lecture 2 Flashcards
what is the common language and process used to create knowledge
scientific method
what are the requirements for causality
- covariation
- temporal relationship
- elimination of confounds
the core concepts within subfields of psychology
phenomena
a reasonable alternative explanation
third variable problem
what is a third variable
a third variable (confounding variable) is a variable that causes both the independent and dependent variable
define external validity
external validity is whether the results of a study can be used to describe the population
define internal validity
internal validity is obtained through thorough control of the experiment to ensure the results can be trusted
why is it difficult to obtain both internal and external validity
because in reality, nothing is controlled thus it makes an experiment with high internal validity difficult to apply to real life
what is the goal of psychological research
to understand individual behavior and mental processes through systematic observation.
what is the organizational and self-correcting process for evaluating ideas through observation and analysis
scientific method
the scientific procedure for testing a hypothesis
experiment
what are carefully defined variables that everyone can agree on
operational definitions
what do you call the chance that you will get similar results from multiple testing?
reliability
what is the confidence that your test is actually testing what you say it is
validity
differentiate reliability and validity
reliability is the consistency of a measure (if you can see same results with repetition) while validity is the accuracy of a measure (do the results really represent what they are supposed to measure?)
a mathematical model of reality that makes predictions
statistical methods
the complete set of people meeting a set of characteristics
population
what allows for a phenomenon to be studied
variability.
without it, there is nothing that needs to be examined about the phenomenon (no comparisons can be made)
what characteristics make a research question good
Feasible
Interesting
New
Ethical
Relevant
what are the main categories of research questions?
description
- describe a particular phenomenon
explanation
prediction
application
what is operationalization
defining a concept in a way that allows it to be measured
what research questions help us describe a particular phenomenon and help us answer “what” types of questions?
descriptive questions
talk about descriptive questions
they describe a particular phenomenon. it helps describe behaviors systematically like in studies that assess the percentage of drinking in a population. this just gives us a greater understanding of the phenomenon (drinking)
what type of research question help us answer “why questions?”
explanation