When children become interested in computers or video games, time is taken mostly from what other activity?

Staying up especially late on weekends is most likely to have an influence on:

A) narcolepsy B) sleep apnea C) the circadian rhythm D) seasonal affective disorder

The process by which people concentrate on selected skill areas to compensate for losses in other areas is called

a) selective optimization. b) activity theory. c) continuity theory. d) minimizing theory.