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A psychology student is writing a research report comparing spatial reasoning skills between genders and calculates an effect size of Cohen's d=0.05d = 0.05. Apply the gender similarities hypothesis to explain how this student should describe and interpret the magnitude of this specific finding in their report.

Question: A psychology student is writing a research report comparing spatial reasoning skills between genders and calculates an effect size of Cohen's d=0.05d = 0.05. Apply the gender similarities hypothesis to explain how this student should describe and interpret the magnitude of this specific finding in their report.

Sample answer: The student should describe the finding as a trivial difference because the effect size of Cohen's d=0.05d = 0.05 is less than the 0.100.10 threshold. Under the gender similarities hypothesis, this result should be interpreted as supporting the claim that men and women are fundamentally similar on this cognitive variable.

Key points:

  • Classifies Cohen's d=0.05d = 0.05 as a trivial difference.
  • Applies the threshold of Cohen's d<0.10d < 0.10 from the gender similarities hypothesis.
  • Interprets the finding as supporting the fundamental similarity between genders.

Rubric: The response must apply the threshold of Cohen's d<0.10d < 0.10 to classify d=0.05d = 0.05 as a trivial difference and interpret it as supporting the idea of fundamental similarity between genders.

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Updated 2026-05-27

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Research Methods in Psychology - 4th American Edition @ KPU

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