According to the Seattle Longitudinal Study, when does crystallized intelligence reach its peak?

After age 35, women tend to have

a. shorter labor. b. longer labor. c. more male children. d. more female children.

Regarding axons, which of the following statements is FALSE?

a. Some axons are only 0.1 millimeter long. b. Some axons stretch up to a meter in length throughout the nervous system. c. Axons "branch out" into slightly larger fibers, which end in several bulb-shaped somas. d. The human brain contains about three million miles of axons.