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

question 23

Multiple Choice

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

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Definitions:

Organizing Research

The process of planning, executing, and managing research activities to systematically investigate a topic or problem.

Test-retest Reliability

The degree to which the same test or assessment yields consistent results over time when taken by the same individual under the same conditions.

External Validity

The extent to which the results of a study can be generalized to other situations and to other people.

Interrater Reliability

A measure of how consistently different observers or raters assess, score, or judge a particular trait, behavior, or outcome.