Experts believe that prenatal exposure to ________ is the leading known cause of mental retardation in the United States

Schizophrenia usually first appears between the person's ____ and mid 30s.

a.) Early childhood b.) Late teens c.) Early 20s d.) Early teens

Julius has learned that when his older sister cut her doll's hair, she got in trouble. He also learned that when his younger sister cut out paper dolls from a book, she did not get in trouble

Through _____, he has learned in which situations he is and is not allowed to use scissors. a. perspective taking b. punishment c. reward d. modeling