In an evaluation of an intervention that seeks to increase self-esteem scores,if the mean of the experimental group is 60,the mean of the control group is 50,and the standard deviation of the control group is 5,the Cohen's d effect size is:
A)5
B)2
C)10
D)0.10
E)60

Question

Quizplus · Accepted Answer

Cohen's d is calculated as the difference between the means of the two groups divided by the standard deviation of the control group: (60 - 50) / 5 = 2.

In an Evaluation of an Intervention That Seeks to Increase