A research study that compares two or more groups of participants on their response to a treatment without randomly assigning the participants to the treatment conditions is considered______.
A) a true experimental design
B) a quasi-experimental design
C) an unethical experimental design
D) none of these

Question

Quizplus · Accepted Answer

This type of study is considered a quasi-experimental design because the groups were not randomly assigned to the treatment conditions. A true experimental design would involve randomly assigning participants to treatment conditions, and an unethical design would involve a study that violates ethical principles. None of these options fully describe the study in question, but B is the closest fit.

A Research Study That Compares Two or More Groups of Participants