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21-11-2017
Social Studies

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Yvette, an investigator who is interested in the effectiveness of various memory strategies, instructs randomly assigned participants to use either imagery or repetitive silent speech to remember a list of 20 words. two weeks later, she tests these participants for how many words they can recall. the imagery group recalls an average of 2.6 words, while the repetition group recalls an average of 1.9 words. she concludes that there is no difference in the effectiveness of these memory strategies because the results are not statistically significant. is this a reasonable conclusion?

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02-12-2017

This is not a reasonable conclusion, when she concludes that there is no difference in the effectiveness of these memory strategies because the results are not statistically significant. No, because a dependent variable measured after a two-week delay may lack the sensitivity to detect a difference.

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