Negative behavior toward members of a group solely because of their membership in that group is known as __________.

Kylie first learned to lift her head, then sit up, crawl, stand, and walk. These changes in type and kind of motor development best represent

a. qualitative changes. b. quantitative changes. c. both qualitative and quantitative changes. d. neither qualitative nor quantitative changes.

Campbell and Seiden (1973) trained rats to respond for food reinforcement in a Skinner box on a differential reinforcement of low rates (DRL) schedule. They found that rats could overcome the effects of amphetamine on responding if they had been allowed

to practice the DRL schedule under the influence of the drug. This is an example of a. dispositional tolerance. b. habituation. c. behavioral tolerance based on operant conditioning. d. behavioral tolerance based on classical conditioning. e. reverse tolerance.