The process of sorting sperm samples into cells with X and Y chromosomes and introducing a "lopsided" sample of sperm to the uterus during fertile periods is called

The additions Rothbart added to Thomas and Chess's temperament qualities will pick up on:

a. infant aggression b. differences in reaction times c. differences in ability to manage negative emotions. d. differences in crying level.

Skinner believed that respondent behavior:

a. produces a change in the organism's environment. b. must occur before reinforcement can occur. c. is emitted in the absence of a stimulus. d. does not account for all human behavior.