Barry had a stroke several months ago. Among the changes that his family has noticed is that he now blows up over little things, cries over minor problems, and laughs at anything, no matter how silly. Barry is showing __________.

Efrain and Theresa are both high school juniors and have been serious romantic partners for nearly 2 years. Research indicates that such early pairing signifies

identity achievement. emotional stability. emotional trouble. healthy development.

Unlike later in life, a neonate's sleep-wake patterns are governed by ____

a. light or dark cues b. hunger c. activity level d. hormonal level