In every normal cell (except the sex cells) human beings have ______ chromosomes
a. 20 c. 27
b. 46 d. 64
b
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What does it mean to say that someone with an IQ score of 130 is in the 98th percentile?
a. This person scored better than 98 percent of comparable people. b. This person answered 98 percent of the questions correctly. c. This person answered 130 questions correctly. d. This person's score was 30 percent better than average.
Which of the following most strongly emphasizes learning by imitation?
a. Classical conditioning b. Operant conditioning c. Social learning d. Conditioned taste aversion
According to surveys, births to single, unmarried mothers continue to be common in the United States, particularly among ____________
a. teenage females b. black females c. white females d. Hispanic females
Which of the following statements best describes the relationship between alcohol and sleep?
A. Alcohol may help initiate sleep, but it interrupts ongoing sleep and can be the cause of a sleep disorder. B. Alcohol may help initiate sleep and enhance ongoing sleep, but it leads to addiction if used as a sleep aid. C. Alcohol increases REM sleep. D. Alcohol increases total sleep time in an effective manner, but continued use produces tolerance that negates this beneficial effect.