An experimental design employs two groups: a(n) __________group and a(n) __________group

The major difference between the control groups of the pretest-posttest, natural control group design and the randomized, posttest-only, control-group design is that

A) in the latter, participants are randomly assigned to groups. B) in the former, the people in the control group are aware of the research hypothesis. C) in the latter, participants are only assigned randomly to the experimental group, but not the control group. D) there is no real difference between the two designs.

Which of the following individuals would be considered an amateur in a U.S. House race?

a. A sitting state legislator b. The mayor of a large city c. A district attorney d. A well-known TV host who covers politics