The main idea that defines this perspective is that people change in predictable ways as the influences of heredity and environment unfold over time:

Which of the following abilities decline during adulthood?

a) intellectual abilities b) processing speed c) wisdom d) verbal ability

Eating, drinking, sexual behavior, temperature control, and sleeping are most strongly influenced by the

a. medulla. b. cerebral cortex. c. thalamus. d. hypothalamus.