According to Freud, during the first 18 months of life, the dominant source of sensual pleasure is the ________

According to Hackman and Oldham (1980), which of these is a core job dimension?

A) autonomy B) experienced responsibility C) contextual performance D) self-actualization

George is cheerful, confident, and optimistic. According to Hippocrates' theory, George

has an excess of ______. a. phlegm c. yellow bile b. blood d. black bile