Ben was a cocaine addict and began therapy to stop his addiction. However, after a few days without the drug, he had intense urges to use it. He also started sweating excessively and experiencing shakiness due to anxiety. In this scenario, Ben was experiencing _____

A conversation is more likely to occur in the campus center lounge than in the library because

a. specific environments have a significant impact on people's behavior by placing strong demands to act in expected ways. b. the density level is higher in the campus center lounge than in the library. c. the architectural design of the campus center lounge differs greatly from that of the library. d. more sociable personalities tend to frequent the campus center lounge than the library.

Suppose that a participant completes a task in a research study faster than he or she would have completed the task outside the study (i.e., in their natural surroundings). This would be an example of ______.

a. regression toward the mean b. maturation c. a history effect d. the Hawthorne effect