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Predictive Physiological Anticipation Preceding Seemingly Unpredictable Stimuli: A Meta-Analysis

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Mossbridge, Julia, Tressoldi, Patrizio, Utts, Jessica 2012 Modern Era precognition

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Plain English Summary

Here's a wild one: this landmark meta-analysis pooled 26 studies from seven labs over three decades to ask whether your body somehow knows what's coming before it happens. Across skin conductance, heart rate, brain scans, and pupil dilation, they found a small but statistically rock-solid effect -- people's bodies start reacting to upcoming emotional events before those events are randomly selected. Perhaps most eyebrow-raising: higher-quality studies produced bigger effects, the opposite of what you'd expect if sloppy methods were driving results. This paper became a lightning rod, prompting a pointed critique from Schwarzkopf and a rebuttal from the original authors. The conclusion? Something real seems to be happening, but nobody can explain how.

Research Notes

The foundational meta-analysis of presentiment/PAA research, directly cited by both sides of Controversy #3. Its finding that study quality correlates positively (not negatively) with effect size is unusual and frequently invoked in the broader psi methodology debate. Spawned the Schwarzkopf (2014) critique and the Mossbridge et al. (2014) rebuttal.

A meta-analysis of 26 prospective reports (1978–2010) from seven laboratories tested whether pre-stimulus physiological activity predicts the direction of post-stimulus responses to unpredictable stimuli. Using arousing-vs.-neutral and guessing-with-feedback paradigms across electrodermal, heart rate, blood volume, pupil dilation, EEG, and fMRI measures, the analysis found a small but highly significant overall effect (ES = 0.21, 95% CI = 0.15–0.27, z = 6.9, p < 2.7 × 10⁻¹²). Higher-quality studies produced quantitatively larger effects. Trim-and-fill analysis estimated four missing negative studies; Orwin's fail-safe N was 87. The authors conclude the effect is real but its mechanism remains unknown.

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APA
Mossbridge, Julia, Tressoldi, Patrizio, Utts, Jessica (2012). Predictive Physiological Anticipation Preceding Seemingly Unpredictable Stimuli: A Meta-Analysis. Frontiers in Psychology. https://doi.org/10.3389/fpsyg.2012.00390
BibTeX
@article{mossbridge_2012_predictive,
  title = {Predictive Physiological Anticipation Preceding Seemingly Unpredictable Stimuli: A Meta-Analysis},
  author = {Mossbridge, Julia and Tressoldi, Patrizio and Utts, Jessica},
  year = {2012},
  journal = {Frontiers in Psychology},
  doi = {10.3389/fpsyg.2012.00390},
}