A researcher asks students to record in a journal the emotions they experience every hour. She finds that over time, the descriptions become shorter and less detailed. What may be responsible for this change in performance?
A. selection bias
B. cohort effect
C. instrument decay
D. regression toward the mean
Answer: C
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Our short-term memory abilities are a function of activity in the:
a. hippocampus c. cortex b. amygdala d. occipital lobe
When the probability of a Type I error is low, we say we have observed:
a. a Type II error. b. statistical significance. c. the null hypothesis. d. the alternative hypothesis.
According to the article Old Folks at Home, concerning the ability of older people to perform household tasks, the variables manipulated in the study included:
(a) safe or dangerous tasks (b) chosen or assigned tasks (c) easy or difficult tasks (d) tasks requiring, or not requiring, fast reaction time
Adjustment disorders are classified in the DSM-5 within a category of ____________
a. Schizophrenic Disorders b. Trauma and Stressor-Related Disorders c. Anxiety Disorders d. Childhood Disorders