Exhibit 10-9: Identify the threats to internal validity illustrated in the examples below.
-Refer to Exhibit 10-9.Students were given a pretest measuring attitudes toward a minority group and then viewed a film on the accomplishments of members of the minority.The students showed significantly more favorable attitudes after viewing the film.
A) experimental mortality
B) reactive effect of testing
C) statistical regression
D) maturation
E) instrumentation

Question

Quizplus · Accepted Answer

The threat to internal validity in this example is the reactive effect of testing as the pretest might have sensitized the students to the topic, making them more aware of it and therefore more receptive to the messages in the film. Other threats to internal validity such as experimental mortality, statistical regression, maturation, and instrumentation are not relevant to this example.

Exhibit 10-9: Identify the Threats to Internal Validity Illustrated in the Examples