Approximately what proportion of American adolescents who are clinically depressed have at least one other psychological disorder?

If an infant misses out on certain experiences during a crucial window of time called a(n) ________ perception will be impaired

a. sensory adaptation b. depth perception c. perceptual set d. critical period

New mom Lin was up most of the night with her infant daughter. To give Lin a chance to sleep, her husband takes the baby to his parents’ house for a few hours. As soon as they leave, Lin falls fast asleep. What stage of sleep does Lin likely enter to compensate for her lack of sleep?

a. ?Stage 1 N-REM b. ?Stage 2 N-REM c. ?Stage 3 or 4 N-REM d. ?REM sleep