In a study of the effects of exercise on cardiovascular fitness, a sport psychologist randomly assigned participants to one of four groups
Participants engaged in aerobic exercise for either 0, 15, 30, or 60 minutes three days a week for three months. Which of the following statements is true about this study?
a. there is no control group
b. participants in the control group did not exercise
c. there are four independent variables
d. the dependent variable has four levels
e. this is not an experiment
b
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In Lady Macbeth, who washed her hands repeatedly until they were red and raw, Shakespeare provided an example of __________
a) major depressive disorder. b) generalized anxiety disorder. c) a specific phobia. d) obsessive-compulsive disorder.
What two relationship problems have researchers found that are associated with various mental disorders?
A. lying and cheating B. conflict and anger C. insecurity and lack of self-confidence D. jealousy and anger