To keep boredom and fatigue to a minimum, it is best to alternate short study sessions with brief rest periods. This pattern of studying is referred to as practice

There is little reliable research on racial and ethnic differences in stress response because

A) researchers have thought these differences too trivial to measure. B) factors such as socioeconomic status and sex have not been controlled. C) ethics does not permit research that exposes people to stress. D) biological differences between ethnic groups make comparisons invalid.

For which mode of behavior is role-playing most appropriate?

a. Emotions b. Physiological responses c. Cognitions d. Overt behaviors