The conditioned tolerance study in your text suggests that:
a. Cocaine is very similar to caffeine
b. Nicotine can be both a stimulant and a depressant
c. Heroin overdose may occur when the drug is administered in a novel environment
d. Tolerance to alcohol often produces tolerance to marijuana
C
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An experimenter tests the hypothesis that physical exercise helps people's mood (makes them happier). Subjects in the experimental group participate on Monday and Tuesday and those in the control group on Wednesday and Thursday. In this study, what is the dependent variable?
a. the exercise b. the day of the week c. the hypothesis d. the mood (degree of happiness)
Which of the following best describes the person with undifferentiated schizophrenia?
A) Lincoln, whose schizophrenia involves a chronic pattern of wild excitement followed by muteness and immobility. B) Jake, who shows bizarre behavior, delusions, and disordered speech but has normal emotions. C) Constance, whose speech is incoherent and filled with invented words, but whose emotions are inconsistent and inappropriate for the situation. D) Pauline, who is convinced that her husband is poisoning her food and can hear voices (which others cannot hear) calling her a liar and a thief.