A sleep-wake disorder characterized by frequent interruption of sleep or early waking is known as

a. onset insomnia

What term describes a person who has trouble seeing one of the primary colors?

a) dichromat b) trichromat c) monochromat d) anomalous trichromat

Compared to early childhood, self-evaluations during middle childhood become

A) more realistic. B) unrealistically optimistic. C) more negative. D) more positive.