A student used a nonequivalent control group design to examine the effectiveness of a video application the library uses to introduce first year students to the library's resources.Which potential threat to internal validity would she examine by comparing the pretest scores for both groups?
A) a maturation threat
B) a selection threat
C) a regression threat
D) an instrumentation threat

Question

Quizplus · Accepted Answer

By comparing the pretest scores of both groups, the student can check whether there were any significant differences in the characteristics of the groups before the intervention. This helps to address the threat of selection bias, where the groups may differ in important ways that influence the outcome. Maturation threats refer to natural changes that occur over time, regression threats occur when a group is selected because of extreme scores, and instrumentation threats refer to changes in the measurement instruments or procedures.

A Student Used a Nonequivalent Control Group Design to Examine