Dr. Maizenblu was testing out a new medication used to treat depression
He had 150 participants who had varying levels of depression. Because he wanted to see whether a new drug really worked, he separated the severely depressed from the mildly or moderately depressed. He then made sure the severely depressed group actually received the drug while the other group received the placebo. What error, if any, did Dr. Maizenblu make in this experiment?
a) He made no error at all.
b) He did not have enough participants in the study.
c) He showed selection bias.
d) He showed unethical treatment of depressed people.
Answer: c
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How might adolescents' tendency to engage in such risky behaviors as street racing and experimental drug use reflect brain development phenomena?
a) The corpus callosum is still developing during adolescence, impeding communication between the two hemispheres of the brain. b) The left hemisphere matures more slowly than the right, delaying the development of logical thinking abilities. c) The prefrontal cortex matures slowly, retarding adolescents' ability to control their impulses. d) The limbic system does not develop fully until early adulthood; adolescents therefore have a poor understanding of their own emotions.
Social categories such as "nerds," "normals" and "burnouts" represent
a. cliques. b. crowds. c. friends. d. ethnicity.