One successful approach to delinquency prevention is the ____________________ approach

A synonym for fraternal twins is

a. dizygotic twins. b. monozygotic twins. c. allele twins. d. heterozygotic twins.

As a child moves from the sensorimotor stage to the preoperational stage, he or she first becomes able to

a. conserve. b. think symbolically. c. perceive the environment. d. use abstract reasoning.