In order to test the effect of praise on learning, a group of students receive verbal encouragement every time they do something correct. At the end of the semester, their grades are recorded and analyzed. What is missing from the above design?
A) an independent variable
B) an experimental group
C) a dependent variable
D) a control group

Question

Quizplus · Accepted Answer

The design is missing a control group to compare the effect of praise with the absence of praise. Without a control group, it is difficult to determine if the improvement in grades is solely due to the praise or if it is due to other factors such as increased studying or better teaching.

In Order to Test the Effect of Praise on Learning