The terms "clique" and "crowd," as used to define the peer groups of adolescents, was first identified by Australian researcher __________

An early theory of hunger proposed by Cannon and Washburn asserted that people are

motivated to eat when the a. hypothalamus signals the nervous system that blood-sugar levels are low. b. temporary fat reservoirs are low. c. set points for food are triggered by signals from the brain. d. stomachs are empty. e. blood-sugar levels are high.

The prefrontal cortex:

a. Is the single largest area in the human brain b. Is twice as large as in chimpanzees c. Is involved in planning and decision making d. All of the above