If you look at 2 distributions showing an effect size of, say, 0.2 it really is comically unimpressive. See here for the full, pathetic effect:https://rpsychologist.com/d3/cohend/
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Ha! What you can see above is an ES of 1 (very rare). Click on the link to manipulate the graphic.
End of conversation
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Are they wrong?
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They are correct. But there is some research with big effects. Stereotype research.
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Half the people thought 1/3 is LESS than 1/4 because 4 is bigger than 3. https://www.mentalfloss.com/article/76144/why-no-one-wanted-aws-third-pound-burger … There is no way they are going to understand effect sizes.
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That is because they are.
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Do you know of a study on whether small effect sizes are basically neglible and dubious?
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