_____ drug _____ results from the body's and brain's natural ability to protect itself against harmful substances

a) Psychological; tolerance
b) Physical; dependence
c) Emotional; addiction
d) Physical; withdrawal

Answer: b

Psychology

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Which is known to have a genetic component?

(a) schizophrenia (b) extroversion (c) intelligence (d) all of the above (e) none of the above

Psychology

The correlation between the IQs of biological parents and their offspring reared

apart is about .20. For identical twins reared apart, it is (a) zero, because they do not vary at all (b) about the same as that of biological parents and their offspring reared apart (c) high, about .70 (d) perfect, that is 1.0, otherwise they would not be identical

Psychology