Cohen has proposed some effect-size conventions based on the effects observed in psychology research in general because:
A)researchers frequently need to decide whether the effect size that they have found allows them to reject the null hypothesis
B)it is usually difficult to know how big an effect to expect from a given experiment
C)Cohen originally developed the relevant scales
D)they are more accurate than figuring a minimum meaningful difference

Question

Quizplus · Accepted Answer

Cohen proposed effect-size conventions to provide a benchmark for researchers, as it is often challenging to anticipate the magnitude of an effect from a specific experiment. This helps in interpreting the practical significance of their findings.

Cohen Has Proposed Some Effect-Size Conventions Based on the Effects