Codeine, heroin, and morphine all ____ and are derived from the ____

a. stimulate the central nervous system; cannabis plant
b. stimulate the central nervous system; coca plant
c. depress the central nervous system; opium plant
d. depress the central nervous system; marijuana plant

C

Psychology

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An animal trainer is trying to teach a lion to perform tricks for circus

First the lion is given food if he sits quietly on a chair. Next the lion is given food if he raises one paw. Finally the lion is given even more food if he gives the trainer a "high-five." In this example, the lion is being trained by A) negative reinforcement. Incorrect. Negative reinforcement involves terminating an unpleasant stimulus. B) generalization. C) punishment. D) shaping

Psychology

The simplest way to produce extinction of learned behavior is through

(a) shock therapy (b) negativism (c) withholding reinforcement (d) increasing conflicting reinforcement

Psychology