A student used a nonequivalent control group design to examine the effectiveness of a computer module the library uses to introduce first year students to the library's resources.Which threat to internal validity could she potentially rule out by examining the pretest scores for both groups?
A)a maturation threat
B)a regression threat
C)a selection threat
D)an instrumentation threat

Question

Quizplus · Accepted Answer

By examining the pretest scores for both groups, the student can assess whether the groups were equivalent at the start, thus potentially ruling out a selection threat.

A Student Used a Nonequivalent Control Group Design to Examine