Dr. Harding compared the driving performance of equal numbers of men and women randomly assigned to high and low anxiety groups. The state of anxiety was induced by threatening or non-threatening instructions. What is the research design?

A. quasi-experimental

B. repeated measures

C. observational

D. Independent groups

3. Research participants are randomly assigned to different groups in an experiment in order to a increase chances that participants are representative of people in general b. minimize chances that participants in any group know each other. o minimize any differences between groups of participants. d increase chances that the different groups have the same number of participants.

14. A control group A) must always be used in correlational research B) is not exposed to the experimental treatment C) cannot be used as a comparison to the experimental group D) must be deceived into believing they are receiving treatment E) all of the above

7. Which of the following methods is most helpful for clarifying cause and effect relationships? a correlational research b. the survey c. naturalistic observation d. the experiment