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Publication Bias in Psychology: A Diagnosis Based on Correlation between Effect Size and Sample Size

Discussion in 'Other Health News and Research' started by Dolphin, Sep 10, 2014.

  1. Dolphin

    Dolphin Senior Member

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    Free full text: http://www.plosone.org/article/info:doi/10.1371/journal.pone.0105825

     
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  2. Bob

    Bob

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    I've only read the abstract, and I love the conclusion! (Which is not really a surprise to us!)
     
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  3. A.B.

    A.B. Senior Member

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    Do I understand this right? In plain English, psychology studies with few participants report great effects, but the more participants there are, the smaller the effect. This suggests that many studies select participants in a biased manner, or that small studies are being done and redone until they show the desired outcome. The barely statistically significant findings also suggest that data is tortured until it confesses, or that studies are being done and redone until by sheer chance the desired result is obtained.
     
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  4. Bob

    Bob

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    I haven't read the full paper but my interpretation is the same as your's.
    (But I couldn't have summarised it so well.)
     
  5. A.B.

    A.B. Senior Member

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    Oh wow, this is funny. Come on, I think you can close that last 10% gap. Then you no longer need to do research because you're always right anyways.
     
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  6. Ren

    Ren .

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    :D
     
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