Jacob Cohen's scientific contributions

Citations

... In addition, effect sizes were determined by converting partial eta-squared (η 2 p ) to Cohen d (Cohen d = 2 Â √(η 2 /1 − η 2 ). 44 According to Cohen, d < 0.50 indicates small effect, 0.50 ≤ d < 0.80 indicates medium effect, and d ≥ 0.80 indicates large effect. 44 The significance level was set at P < 0.05. ...