If r has a positive value, as one variable increases, the other variable _____
a. increases c. first increases, then decreases
b. decreases d. shows no systematic change
A
If positively correlated, both variables increase and decrease together.
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Joanna is experiencing severe anxiety. Her psychiatrist attributes her disorder to a chemical imbalance. Her psychiatrist is using the ___________ of abnormality
a) psychoanalytic model b) intrapersonal model c) biological model d) behavioral model
Which of these is true in operant conditioning but not in classical conditioning? a. The learned response is quickly forgotten unless it is rehearsed frequently
b. The individual's response controls the outcome, such as reinforcement. c. Two stimuli are presented at certain times, regardless of the individual's actions. d. The animal associates events distant in time more easily than those close in time.
Rich is a 35-year old smoker. Most likely, he began smoking ____
a. ?when he was 25 b. ?before the age of 18 c. ?around the age of 21 d. ?within the last two years
Eating carbohydrates before bed may promote sleep, because carbohydrates raise brain levels of tryptophans, which a. are serotonergic antagonists
b. are precursors for the synthesis of serotonin. c. are a form of serotonin. d. prevent the reuptake of serotonin.