A researcher is interested in studying the effects of viewing television violence on aggression in children. She shows one group of participants an extremely violent movie, another group a moderately violent movie, and a third group a nonviolent movie. In this case, the level of movie violence shown to the children would be considered the ________ variable, and the children's subsequent level of aggressive behavior would be the ________ variable.
The variables are the factors that add dynamics to a study and are observed.
In an experiment, a variable is a term used for the factors that vary. The major two types of variables used in an experiment are the independent and dependent variables.
The independent variables are the variable that can be manipulated by the experimenter, and whose effect can be seen on the participant or other factors.
The dependent variable is the variable on which the effect of manipulated behavior is seen. It could be the behavior of the person or the measure for which the study is being conducted.