Vanessa Kanaan, an Associate Professor at the University of Louisville, creates a new "empathy" test and administers it to business majors and biology majors. She finds that the two groups differ significantly from each other with an effect size Cohen's d) equal to .85. Based on this information which of the following statements is accurate?
A) although her results are statistically significant, the effect size would be considered "small" meaning that it has little practical importance
B) the effect size in this study would be considered "moderate"
C) the effect size in this study would be considered "large"
D) it is impossible to obtain an effect size of .85; she must have calculated it incorrectly

Question

Quizplus · Accepted Answer

Cohen's d is a measure of effect size used to indicate the standardized difference between two means. A value of .85 is considered "large" according to conventional benchmarks, suggesting a substantial difference between the two groups.