The physical or somatic symptoms of a major depressive disorder include
A. changes in appetite or weight.
B. decreased ability to concentrate.
C. increased energy.
D. orgasmic feelings.
Answer: A
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Experimental research typically has a higher level of ____________ than nonexperimental methodology
a. Validity b. Reliability c. Control d. Randomization
Cross-sectional studies sometimes fall short in that they do not assess developmental differences
Indicate whether the statement is true or false
According to the text, about what percent of the population is right-handed?
a. 10% b. 50% c. 90% d. 75%
Research on the effectiveness of fear appeals suggests that inducing moderate levels of fear works better than inducing high levels of fear. According to the text, the explanation for this is that
a. people tune out high-fear messages b. fear appeals have greater influence on intentions to behave than on actual behavior c. fear appeals affect actual behavior d. people tune out high-risk messages