A(n) _______________ is an early infant vowel-like sound.

​_______________ observations differ from naturalistic observations in that they create situations where the behavior of interest is likely to be elicited.

​List the different stages (phases) of childbirth and note what occurs to start and end each stage.

​The third stage of childbirth (labor) involves the expulsion of the afterbirth, also called the _______________.

​Jamie is a rather self-centered child who does not like to help other people. Describe three things Jamie’s parents could do to make it more likely that Jamie will engage in altruistic behaviors.

​Imaginary friends are psychologically unhealthy and should be discouraged.

​Phil and Lil are both playing with dolls in the same room. Use them in examples of parallel, simple social, and cooperative play.

​As children get older, they rely less on others to regulate their emotions for them.

​Low birth weight can usually be prevented by good _______________ care.

​The process of deliberately seeking environments that are consistent with one’s heredity is called _______________.