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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Which of these facts is central in the learning approach to personality? a. Most people's personality remains stable over many years. b. Your behavior varies from one situation to another
c. Personality represents a conflict among id, ego, and superego. d. Personality can be described in terms of five major traits.
What percentage of U.S. births take place in freestanding birthing centers?
10 25 50 5
Compared to girls in the West, Chinese girls:
a. develop pubic hair 2 years after breast development. b. develop breasts after they develop pubic hair. c. develop breasts after menarche. d. develop pubic hair after menarche.
Overall, leisure activities with friends ____ in the course of the twenties as emerging individuals transition into young and middle adulthood
a. decline steadily b. decline sharply c. increase steadily d. increase sharply