Which one of the following disorders is about equally common for men and women?

Primary drives; hunger, thirst, sex are, by definition,______

a. unlearned c. classically conditioned b. learned d. operant conditioned

Researchers believe that brain functioning may improve in middle childhood partly because of

A) rapid brain growth. B) an overabundance of gray matter. C) the influence of hormones. D) the decrease in white matter.