According to recent surveys, which of the following age groups represent the largest group of cohabiting couples?

Psychometricians are most interested in:

A) the measurement of knowledge and thinking. B) how the brain processes incoming stimuli. C) theorizing about the different kinds of intelligence there may be. D) understanding epistemic development.

The slower female response during intercourse probably occurs

a. because the vagina is hypersensitive to touch. b. because stimulation to the clitoris is less direct. c. because women skip the plateau phase. d. for all of these reasons.