Table 1 Guide to Cohen’s score
Cohen's d scores | Effect size | Implication on criteria of success |
|---|---|---|
-100 | Verylarge effect size | The class scores on this test fell far short of meeting the criterion of success for this assessment. |
-1.2 | Large effect size | The class scores on this test fell short of meeting the criterion of success for this assessment. |
-0.8 | Medium effect size | The class scores on this test fell somewhat short of meeting the criterion of success for this assessment. |
-0.5 | Small effect size | The class scores on this test approached the criterion of success for this assessment. |
-0.2 | Tinyeffect size | The class scores on this test appear to have met the criterion of success for this assessment. |
0.2 | Smalleffect size | The class scores on this test slightly exceeded the criterion of success for this assessment. |
0.5 | Mediumeffect size | The class scores on this test measurably exceeded the criterion of success for this assessment. |
0.8 | Largeeffect size | The class scores on this test greatly exceeded the criterion of success for this assessment. |
1.2 | Verylarge effect size | The class scores on this test vastly exceeded the criterion of success for this assessment. |