Cohen Proposed Effect-Size Conventions Based on the Effects Observed in Psychology

question 49

Multiple Choice

Cohen proposed effect-size conventions based on the effects observed in psychology research in general because

• A)experimenters need to assess whether the obtained effect size will allow them to reject the null hypothesis.
• B)determining how large an effect can be expected in a given experiment is difficult.
• C)they follow from the original scales he developed.
• D)they are more accurate than calculating a minimum meaningful difference.

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