The difference between David's two typing tests, one at the beginning of the semester and one at the end, reflects the fact that he typed quite a few term papers during the semester. This reflects

Now that Rosie is in late adulthood, the socioemotional selectivity theory predicts she will

A. become more socially withdrawn. B. continue to actively make new friends. C. spend most of her time with familiar friends and family members. D. emotionally invest in peripheral relationships.

During an episode of sleep apnea, a person ________

a. suddenly falls asleep without warning during the day. b. has difficulty waking from sleep in the morning. c. periodically stops breathing during sleep. d. experiences bursts of aggressive behavior during sleep.