As many as 20 percent of low-SES children develop __________ as a result of repeated middle ear infections

The individual differences feature in Chapter 7 examines gender comparisons in mental-rotation skills. According to this discussion,

a. gender differences tend to be smaller for mental-rotation problems than for other mental imagery tasks. b. none of the research has reported significant gender differences in mental rotation. c. all of the research has reported significant gender differences in mental rotation. d. the research sometimes shows that the gender differences in mental rotation disappear when the instructions are changed.

According to the article Termination of the Termites about personality and longevity, conscientious Termites lived about ____ years longer than nonconscientious Termites:

(a) 1 (b) 4 (c) 7 (d) 10