Psych N.S> FL Flashcards
(61 cards)
Retrospective study
When past records are examined
Prospective study
When researchers propose to review incoming data
embedded field study
when researchers posed as patients
Longitudinal study
when the study consist of analysis of participants over time
A mediating variable
One which explains the relationship between two other variables.
A moderator variable
one that influences the strength of a relationship between the two other variables
Cross’s Nigrescence Model
African American are described as progressing through several stages of cultural awareness. In the first stage, pre-encounter, African-Americans tend to view the majority Caucasian culture as being more desirable and would view a doctor of this race as being more skilled.
Effect of Depressants
Depressants cause relaxation by reducing nervous system activity. Alcohol is the most commonly used depressant. It works by stimulating the production of gamma-aminobutyric acid (GABA), an inhibitory neurotransmitter associated with reduced anxiety, and dopamine, which promotes euphoria. Alcohol slows the activity of the frontal lobe, reducing judgment and lowering inhibitions.
Opiates use effect
Opiates are derived from the poppy plant and include such drugs as morphine and codeine. Opiates cause a sense of euphoria and a decreased reaction to pain by binding to opioid receptors in the nervous system. Opiate overdose can cause death when the brain stops sending signals for respiration. After prolonged use, these drugs can cause the brain to entirely stop producing endorphins, meaning that withdrawal is very painful.
how does stimulant work
Stimulants increase arousal in the nervous system, often through the release and inhibition of the reuptake of dopamine, norepinephrine, and serotonin. This effectively increases arousal, increasing heart rate and blood pressure, and creating effects of anxiety, delusions of grandeur, euphoria, hypervigilance, and decreased appetite.
Effect of Hallucinogens
Hallucinogens, such as lysergic acid diethylamide (LSD) and ketamine, distort perception, enhance sensory experiences, and cause introspection, all while increasing heart rate and blood pressure, increasing body temperature, and dilating the pupils.
Marijuana effect
marijuana has qualities of a stimulant, depressant, and hallucinogen. Marijuana, which is the name used for the leaves and flowers of the plants Cannabis sativa and Cannabis indica, has an active chemical called tetrahydrocannabinol (THC) which affects certain receptors in the brain. Additionally, THC increases the production of GABA and dopamine. Physiologically, THC can cause an increase in appetite, dry mouth, fatigue, eye redness, lowered blood pressure, and increased heart rate.
Drive-reduction theory
Depression stems from a reduction in the motivating forces of arousal. A cognitive theorist would argue that arousal is essential to sustaining most behaviors.
Yerkes-Dodson Law
states that performance of a behavior tends to be negatively impacted at high and low levels of arousal. The optimal level of arousal is somewhere between the two.
Abnormal functioning of which brain region plays a role in the development of depression?
Frontal Lobe, Limbic system structures, and Hypothalamus
Frontal Lobe
The frontal lobe is involved in humans ability to project future consequences of current actions.
Limbic system function
Lymbic system structures regulate emotion and memory,
Hypothalamus function
Hypothalamus coordinates many hormones, some of which are involved in mood regulation.
Mood disorder
characterized by the persistent, abnormal elevation and/or lowering of one’s mood, which refers to a sustained, internal state of feeling or emotion. These conditions include bipolar disorders, which are marked by swings between extreme moods. These moods may include depression (a state of persistent sadness and lack of energy) and mania (a high-energy state marked by poor judgment, lack of sleep, and euphoria). Another mood disorder is major depressive disorder, which is characterized by at least one major depressive episode (a period of depression lasting at least two weeks).
Anxiety disorder
involve a state of excessive apprehension, worry, or panic. This state of heightened physical arousal can be unpleasant and inhibit regular functioning.
PTSD
often manifests in people who experienced warfare, sexual assault, or serious injury. PTSD can cause symptoms such as nightmares, flashbacks, and a propensity to avoid stimuli associated with the event.
Schizophrenia
a psychotic disorder, meaning that sufferers experience at least one of the following symptoms: delusions, disorganized thoughts, disorganized behavior, hallucinations, catatonia, and negative symptoms.
Dissociative Disorder
Involve the disruption or breakdown of perception, identity, memory, or awareness. Individuals with these conditions feel disconnected from reality. Often, this dissociation serves to provide an unintentional escape from reality or barrier against stress from a life event.
Internal Locus of Control
People with an internal locus of control believe that they have control over situation and events, that their action can contribute to influencing the outcomes.