The research method in which the investigator manipulates a variable under carefully controlled conditions and observes whether any changes occur in a second variable as a result is the

In the late 1950s, the United States began placing greater stress on high school math and science in response to

A) the rapid spread of computer technology and the Internet. B) international surveys showing that American students scored poorly in math and science. C) the launching of space satellite Sputnik I by Soviet Russia. D) complaints by business leaders about a shortage of technicians.

Felicia is a 17-year old girl who frequently writes notes saying that she is sick and forges her

parents' signature so that she can skip school to hang out with friends. She also shoplifts in department stores and drinks alcohol. Felicia has never been arrested. Felicia lies to her parents about her truancy and drinking, and has run away from home twice. All of these problems started less than two years ago. At this time, Felicia would most likely receive: a. A diagnosis of oppositional defiant disorder and conduct disorder b. A diagnosis of conduct disorder, childhood-onset type c. A diagnosis of conduct disorder, adolescent-onset type d. The legal status of juvenile delinquent e. c and d