How Does the Pretest-Posttest Control-Group Design Control for the Problem

question 84

Multiple Choice

How does the pretest-posttest control-group design control for the problem of selection?

• A) Participants are randomly assigned to groups, so we can assume that the groups are equivalent before the experiment.
• B) Participants are randomly selected, so we can assume that the groups are equivalent before the experiment.
• C) There is a placebo group, so we can assume that demand characteristics are controlled.
• D) There are two more groups in the experiment, so external validity is increased.

---

Definitions:

Diversification

The strategy of investing in a variety of securities in order to lower the risk involved with putting money into few investments.

Flood Insurance Premiums

The payments made periodically to an insurance company in exchange for coverage against loss or damage caused by flooding.

Positive Correlation

A relationship between two variables where they move in the same direction, meaning as one variable increases, so does the other.

Organized-Gambling Venues

Places such as casinos or sports betting facilities where gambling activities are regulated and officially sanctioned.