MCAT Psychology Flashcards
What is a retrospective chart review?
“Retrospective” indicates that past records are examined
What is a prospective chart review?
A review of incoming data
What is an embedded field study?
A study that would occur if the researchers posed as patients, for example
What is a longitudinal study?
A study that would consist of analysis of participants over time.
What is a mediating variable?
A mediating variable is one which explains the relationship between two other variables.
E.g. Consider the relation between social status and frequency of testicular exams. Education might be a mediator variable in that it explains why there is a relation between self-exam and social status
What is a moderator variable?
A moderator variable is one that influences the strength of a relationship between two other variables
E.g. Consider the relation between social status and frequency of testicular exams. Age might be a moderator variable, in that the relation between social status and testicular self-exam might be strong for older men and less strong or nonexistent for younger men.
What is a confounding variable?
A confounding variable is on which is not typically of interest to the research but is an extraneous variable which is related to BOTH the dependent and independt variables.
What is the pre-encounter stage of Cross’s Nigrescence Model
In Cross’s Nigrescence Model, African-Americans 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 white doctor as being more skilled.
What is the immerson-emersion stage of Cross’s Nigrescence Model?
Someone in this stage would view the majority caucasian culture with resentment and distrust and prefer to be treated by someone of his or her own race.
E.g. distrusting a white doctor and preferring to be treated by a black physician
What is the internalization stage of Cross’s Nigrescence Model?
Someone in the internalization stage has integrated aspects of his own culture with that of the majority culture and is working to rectify past racial injustices.
E.g. Recognizing historical injustices in medical care towards racial minorities and working to empower African-American patients to self-advocate
What does Cross posit in his Nigrescence Model?
Culture impact identity and worldview
Define depressant. Give an example
Depressants cause relaxation by reducing nervous system activity. Alcohol is the most common depressant. It works by stimulating the product of gamma-aminobutyric acid (GABA), an inhibitory neurotransmitters associated with reduced anxiety, and dopamine, which promotes euphoria.
Alcohol slow the activity of the frontal lobe, reducing judgment and lowering inhibitions. People can become unable to recognize the consequences of their actions, and their speech may be slurred and motor skills diminished
Define opiate. Give examples
Opiates are derived from poppy plant and include drugs like morphine and codeine. Opiates cause a sense of euphoria and a decrease 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
Define stimulant. Give examples
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 pupils
Define marijuana
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 (THS) which affects certain receptors in the brain. Additionally, THC increase the production of GABA and dopamine. THC can cause an increase in appetite, dry mouth, fatigue, eye redness, lowered blood pressure, and increased heart rate
Drive-reduction and cognitive theorist would argue that depression is more strongly correlated with a deficiency in what fulfillment?
Arousal. Drive-reduction theories suggest that depression stems from a reduction in the motivating forces of arousal. A cognitive theorist would argue that arousal is essential to sustaining most behaviors.
What brain regions play a role in the development of depression
Frontal lobe, limbic system structures, hypothalamus
What roles are frontal lobe involved in?
The frontal lobe is involved in humans’ ability to project future consequence of current actions.
What roles are limbic system involved in?
Limbic system structure regulate emotion and memory,
What roles are hypothalamus involved in
Hypothalamus coordinates many hormones, some of which are involved in mood regulation.
Define mood disorder
Mood disorders are characterized by the persistent, abnormal elevation and/or lowering of one’s mood, which refers to 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 and mania. Another mood disorder is major depressive disorder, which is characterized by at least one major depressive episode
Define anxiety disorders
Anxiety disorders involve a state of excessive apprehension, worry, or panic. This state of heightened physical arousal can be unpleasant and inhibit regular functioning. While most people feel anxiety occassionally, those with anxiety disorders experience it persistently, and it adversely impacts their lives
Define trauma and stress-related disorders
Trauma and stress-related disorders typically arise in response to a highly stressful or traumatic life event. The most common example is post-traumatic stress disorder (PTSD), which often manifests in people who experience warfare, sexual assault, or serious injury. PTSD can cause symptoms such as nightmares, flashbacks, and a propensity to avoid stimuli associated with the event.
Define somatic disorders
Somatic disorders are unified by somatic (bodily) symptoms that can cause stress and impairment to the sufferer. These symptoms generally lack an identifiable physical cause. Alternatively, the individual may be impaired by irrational fears of developing or having a disease, as in illness anxiety disorder.