Lewinsohn and colleagues (1994) interviewed a representative sample of adolescents in Oregon and found that nearly ________ of the adolescents had attempted suicide within a year

Walking delayed two or more years, short stature, slow speech development, and prominent anatomical features such as close-set eyes; short, thick neck; and small, rather square head are symptoms and signs of

A. HIV-infected children B. Trisomy 21 C. Down syndrome D. HIV-infected children AND Trisomy 21 E. Trisomy 21 AND Down syndrome

The number of boys who __________ exceeds the number of girls by a ratio of over 4 to 1

A) experience serious depression B) kill themselves C) make unsuccessful suicide attempts D) overdose on sleeping pills