An experimenter tests the hypothesis that physical exercise helps people's mood (makes them happier). Subjects in the experimental group participate on Monday and Tuesday and those in the control group on Wednesday and Thursday. In this study, what is the dependent variable?
a. the exercise
b. the day of the week
c. the hypothesis
d. the mood (degree of happiness)
Answer: d. the mood (degree of happiness)
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Opioids utilize the same receptors in the brain as
a. serotonin. b. endorphins. c. dopamine. d. norepinephrine. e. GABA.
Beck developed his cognitive therapy based on his patient's:
A. negative automatic statements B. unconscious wishes C. problematic behaviors D. negative regard
The physiological changes of puberty begin anywhere between the ages of ____
a. 6 and 11 in most girls c. 8 and 13 in most girls b. 7 and 12 in most girls d. 10 and 15 in most girls
Which of the following is out of place among the others?
a. classical conditioning b. Edward L. Thorndike c. cats in puzzle boxes d. stimulus-response connections