A researcher was interested in whether watching violence affected children's behaviors. To examine ...

A researcher was interested in whether watching violence affected children's behaviors. To examine this, he showed a violent film to one group of preschoolers and a nonviolent film to a second group of preschoolers,
 
  and then he observed their aggression levels. In this
  study, the independent variable was the:
 
  viewing of the violent film.
  level of aggression displayed before the film.
  level of aggression displayed following the film.
  children's home environment.

Question 2

An example of a dependent variable in an experiment might be:
 
  gender.
  blood type.
  eye color.
  level of depression.

Question 3

Which of the following is the best definition of independent variable?
 
  It is the measured variable that may change depending upon manipulation of
  an experimental variable.
  It is any unmeasured variable not controlled within the experiment.
  It is the variable that is intentionally manipulated by the researcher.
  It is one of the external variables that cannot be controlled by the researc

Question 4

A researcher was interested in whether watching violence affected children's behaviors. To examine this, he showed a violent film to one group of preschoolers and a nonviolent film to a second group of preschoolers.
 
  Following the films, the behaviors of the two groups were
  compared. This study was:
 
  a naturalistic observation.
  an experiment.
  a case study.
  longitudinal research.

Question 5

Experiments allow researchers to:
 
  study the natural environment.
  study the entire complexity and uniqueness of an individual.
  inexpensively adhere to the scientific method.
  determine a cause-and-effect relationship.

Question 6

Question When a researcher is interested in the cause of a particular behavior, the appropriate research method to use is:
 
  the case study.
  scientific observation.
  the experiment.
  the survey.