______ is defined as marked feelings of sadness and worthlessness leading to lack of interest in, and isolation from, normal activities for 2 weeks or more

Which of the following is one of the classic symptoms of ASD?

a. "mongoloid" facial features b. delayed physical development c. impaired communication ability d. inability to metabolize phenylalanine

The textbook reports that in 2007 there were approximately how many reports of abuse or neglect?

A) 1.3 million B) 2.3 million C) 3.3 million D) 5.3 million