Delay, fixation, and deviance are examples of ________

Whose opinion is best supported by the results of twin and adoption studies?

a. Aaron, who assumes heredity is solely responsible for behavioral development. b. Baron, who believes heredity has a substantial, but not total influence on behavioral development. c. Karen, who asserts that heredity has virtually no influence on development. d. Sharon, who asserts that twin and adoption studies are too flawed to yield accurate information about the influence of genetics on development.

Among which age group in the United States are STDs most common?

A) 12–14-year olds B) 14–16-year olds C) 15–24-year olds D) 20–25-year olds