P-Curving a More Comprehensive Body of Research on Postural Feedback Reveals Clear Evidential Value for Power-Posing Effects: Reply to Simmons and Simonsohn (2017)

@article{Cuddy2018PCurvingAM,
  title={P-Curving a More Comprehensive Body of Research on Postural Feedback Reveals Clear Evidential Value for Power-Posing Effects: Reply to Simmons and Simonsohn (2017)},
  author={Amy J. C. Cuddy and Stephen J. Schultz and Nathan Edward Fosse},
  journal={Psychological Science},
  year={2018},
  volume={29},
  pages={656 - 666}
}
We conducted a series of p-curve analyses, following Simonsohn et al.’s rules of p-curving and using a systematically selected, comprehensive and updated set of published studies of “power posing” (i.e., postural feedback), comprising 55 studies (vs. 34 studies), which yield starkly different results and conclusions from those of Simmons and Simonsohn (S&S): (1) evidential value for postural feedback across aggregated effects; (2) evidential value for a clearly specified single effect… 
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The existing evidence for the purported benefits of power posing is too weak to justify a search for moderators or to advocate for people to engage in power posing to better their lives.
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A conceptual replication study of the findings of Carney et al. found that power posing affected levels of hormones such as testosterone and cortisol, financial risk taking, and self-reported feelings of power, and found no significant effect of power posing on hormonal levels or in any of the three behavioral tasks.
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Four comments are offered that hope elucidate the similarities and differences among the 33 published experiments on the embodied effects of nonverbal expansiveness and the newly published research of Ranehill et al. (2015), which found an effect of expansive posture on subjective feelings of power, but no effect of posture on risk tolerance, testosterone, or cortisol.
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Body postures can project nonverbally how a human being feels. Postural changes affect thoughts, emotions, and energy levels, and conversely, energy levels, emotions, and thoughts affect posture. The
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