In experimental studies,
A) the investigator cannot make cause-and-effect inferences.
B) investigators must take special precautions to control for participants' characteristics that could reduce the accuracy of their findings.
C) the researcher directly controls or manipulates changes in the dependent variable.
D) researchers gather information on participants without altering their experiences.
B
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Dr. Potter, an English professor, is curious about his students' attitudes toward one of his favorite books. What research method is he most likely to use to gather this information?
A) Case study B) Survey C) Experiment D) Naturalistic observation
In a study of TV viewing that is described in the textbook, researchers measured the extent to which children watched programs with violent content and then interviewed those same children fifteen years later
Analysis of the data suggested that a. there was no relationship between the number of violent TV shows that children watched and their behavior as adults. b. the men and women who had watched the most violent TV as children were the least likely to display aggression. c. early viewing of violent TV causes later aggression. d. there was a correlation between early watching of violent TV programs and levels of adult aggression, but the relationship was not causal.