Which of the following is NOT a common symptom of depressive disorders?
a. disturbed eating and sleep patterns
b. fleeting episodes of mania
c. an inability to feel pleasure
d. a negative self-image and feelings of worthlessness
B
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The prions believed to cause transmissible spongiform encephalopathies (TSEs) a. normally perform important functions in their host animal, and only cause problems if they are transmitted to another species. b. differ from normal versions of proteins due to their increased length
c. show different forms in different species. d. show identical forms in all species.
Age equivalents, grade equivalents, and percentile scores all represent what type of scale?
a. Ordinal b. Nominal c. Ratio d. Interval
The external validity of an experiment is the ability to _____
a. draw correct conclusions about the hypotheses b. reject the null hypothesis regardless of the data c. apply the results to situations beyond those of the experiment d. do all of these
Which of the following are signs of teething?
a. increases in hunger and appetite b. limited mobility and irritability c. saliva production, drooling, and biting d. frequent naps and a higher rate of nocturnal awakenings