A researcher had two intact groups of students. The two groups were randomly assigned to either a treatment condition or a control group. Both groups of students complete measures at the pretest and again at the posttest. This is an example of what research approach:
A) Randomized experimental
B) Quasi-experimental
C) Comparative
D) Associational

Question

Quizplus · Accepted Answer

This is an example of a quasi-experimental design because although the groups are exposed to different conditions (treatment vs. control), the participants were not randomly assigned to these groups at the individual level. Instead, intact groups were assigned to conditions, which does not meet the criteria for a true randomized experimental design.

A Researcher Had Two Intact Groups of Students