Suppose you randomly assign one group of children to watch violent TV programs and other to watch nonviolent programs. You then measure their aggressive behavior on playground after watching these programs. The measure of aggressive behavior is your ____ in this experiment.

Jorge has been hanging with an inner city gang for nearly two years, participating in gang activities and carefully gathering notes in an attempt to learn how gangs might influence the development of inner-city youth. Jorge is relying on ____ as a research strategy.

The different treatments to which participants are exposed in an experiment represent ____.

A researcher attempting to study the effects of obstetric (that is, child-birth) medication on the behavior of newborn infants cannot control which newborns will have been exposed to these medications. As a result this study would be

Many investigators have found a positive correlation between the amount of prosocial television programming children watch at home and the frequency of children's prosocial (that is, kindly or helpful) behaviors at nursery school. These data clearly establish that exposure to prosocial television causes children to become more prosocially inclined.

Case study methods may be of limited usefulness for drawing valid conclusions because

An important limitation of all correlational studies is that they

To compare the TV-viewing habits of 4th-, 6th-, and 8th- graders, Susan asks students from each grade to list their three favorite TV programs. This research design is an example of ____.

The most important advantage of the experimental method is that it