Most infants begin cooing about 6-8 _____ after birth

A child typically has a vocabulary of about 50 words at which of the following ages?

a. 6 months b. 12 months c. 18 months d. 24 months

The brain area that is specifically important for female sexual behavior is the:

a. medial amygdala b. medial preoptic area c. sexually dimorphic nucleus d. ventromedial hypothalamus