To minimize changes in subjects' behavior caused by the unintended influence of an experimenter's actions, one would use a(n) experiment

Watching and imitating the actions of another person or noting the consequences of those actions is called observational learning, or

a. respondent conditioning. b. insight learning. c. modeling. d. rote rehearsal.

What approximate percentage of the 1.6 million drug-related arrests in 2011 were for drug possession?

a) 82 percen b) 32 percent c) 52 percent d) 72 percent