If genes alone contribute to a trait, which of the following patterns of correlations would be observed?
A. 1.00 for identical twins raised together but a lower correlation for those raised apart
B. 1.00 for both identical and fraternal twin pairs raised together but a lower correlation for those pairs raised apart
C. 1.00 for identical twins and .50 for fraternal twins raised together or raised apart
D. No significant correlation between identical twins or fraternal twins, regardless of whether they are raised together or apart
Answer: C
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When use of a drug interferes with normal behavior, experienced users may learn to compensate and show less impairment than new users. This is an example of
A. drug disposition tolerance. B. behavioral tolerance. C. an active metabolite. D. a prodrug.
Sherri was worried that her son might be using drugs
She had observed him come home in a bad mood and come out of his room in a short time seeming euphoric. A while later, he was drowsy, sat around, and couldn't even concentrate on his favorite television show. The next day he stayed home from school with nausea, diarrhea, and stomach cramps. Sherri should be concerned because from these observations it appears her son might have taken _____ a) ecstasy. b) LSD. c) heroin. d) barbiturates.