On average, how many hours/week do American 15- to 17-year-olds work during the school year?

The tendency of children to develop a mental pattern for being male or female in much the same way they develop other concepts, such as "dog," "bird," and "big," can best be explained by __________

a) Freudian psychoanalysis. b) Piaget's theory of development. c) gender schema theory. d) social learning theory.

Evaluating one's own behavior, abilities, and opinions against those of others is called __________

a) comparative self-esteem b) social comparison c) reflexive comparison d) associative esteem