Sonya thinks that if she plays with a toy train and wears overalls, she will be a boy. Sonya has not developed gender

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

a. early adulthood b. young adulthood c. midlife d. late life

Which of the following have been linked to erectile dysfunction?

A) eating oysters B) excessive sweating C) NSAID pain relievers D) multiple vitamins