The idea that fibers in the sensory nerves can prevent impulses from reaching the brain -- and thus prevent the sensation of pain -- is part of the ______ theory of pain

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.

The text discusses research about Southeast Asian immigrant families. The results of this study suggest that which of the following factors is important in determining children's IQs?

a. race and skin color b. ethnicity and first language learned c. how long the family has lived in the U. S. d. family emphasis on education and success