In a normal distribution, what percentage of the scores falls between the mean and one standard

Generalizing from the text, when an older adult is given a laboratory memory test, his or her score will:

A) be totally inaccurate. B) minimize her true abilities. C) reflect her true abilities. D) inflate her true abilities.

Participants in a research study are asked to report what they are thinking about when a pager signals at different times during the day. The researcher is using a procedure that is known as the ________ method

a. experience-sampling b. think-aloud protocol c. "beeper" d. circadian rhythm