Regarding biases in research, which of the following statements is FALSE?
a. Much of the popularity of herbal health remedies is based on the placebo effect.
b. Single-blind experiments are used to control researcher bias.
c. Double-blind experiments control for both researcher bias and research participant bias.
d. Double-blind testing has shown that about 50 percent of the effectiveness of antidepressant drugs, such as Prozac, is due to the placebo effect.
ANSWER: b
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How are self-help groups different than group therapy?
a) Self-help groups are more expensive than group therapy. b) Self-help groups are not led by professional therapists while group therapy is led by a trained therapist. c) Self-help groups can focus on several different problems within in a group more effectively than group therapy. d) Self-help groups are nondirective while group therapy is directive.
During childhood, obesity is especially serious among
A) girls. B) boys. C) Caucasians. D) minorities.