Neurons are surrounded by ________, which guide neural connections and clean up after neurons send messages to one another.

Which of the following applies to late-onset schizophrenia in relation to early-onset schizophrenia?

A) Late-onset has different risk factors. B) Late-onset has lower severity of positive symptoms. C) Late-onset has lower severity of negative symptoms. D) Late-onset has greater impairment in learning.

One American study found that nearly 50% of African American girls had begun to develop breasts or pubic hair or both, compared to __________ of White girls.

A. 15% B. 25% C. 35% D. 45%