Dr.Dow Jones wants to know whether a problem-based approach to teaching economics will result in higher academic performance than his traditional method.Of the six sections of Economics 101 at his university,Dr.Jones randomly assigns three sections to the traditional method and three sections to the problem-based method.At the end of semester all students complete the same final exam.In this design,students studying under the problem-based method constitute the:
A)placebo group.
B)treatment group.
C)sample.
D)control group.

Question

Quizplus · Accepted Answer

The group of students studying under the problem-based approach is the treatment group because they are receiving the experimental treatment (problem-based approach) being tested. The traditional approach is the control group because they are not receiving the experimental treatment but instead are serving as a comparison group to assess whether the problem-based approach is superior. The placebo group is a type of control group used in studies that involve administering a placebo (inactive treatment) to some participants to assess the effects of an active treatment on others. The sample includes all participants in the study, regardless of their group assignment.

DrDow Jones Wants to Know Whether a Problem-Based Approach to Teaching