Relatively few people use prescription drugs for nonmedical purposes
Indicate whether this statement is true or false.
Answer: False
Rationale: Prescription drugs are now second only to marijuana as the most commonly abused drug among illicit users. In 2009, seven million Americans reported having used prescription drugs for nonmedical reasons within the month prior to the survey. This number is actually higher than cocaine, heroin, hallucinogens and inhalants (paints, glues, gasoline) combined.
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The sign of the correlation (+/–) is generally meaningless for the point-biserial correlation and the phi-coefficient
Indicate whether the statement is true or false
Family and twin studies indicate that anxiety disorders
a. have some moderate genetic basis. b. are controlled by genetics. c. have no impact. d. are controlled by the environment.
Which behavior is most suggestive of schizophrenia?
a. alternation between one personality and another b. outbursts of unprovoked violent behavior toward strangers c. deterioration of daily functioning with disorganized speech and behavior d. episodes of being unable to remember certain events of one's past
The ability to sense the color yellow can be explained by ____
a. ?trichromatic theory only b. ?opponent-process theory only c. ?both trichromatic and opponent-process theory d. ?neither trichromatic nor opponent-process theory