Feeling the future: A meta-analysis of 90 experiments on the anomalous anticipation of random future events
F1000Research January 29, 2016 Daryl Bem, Patrizio Tressoldi, Thomas Rabeyron et al. 78 citations
A meta-analysis of 90 experiments from 33 laboratories in 14 countries found evidence for a small but statistically significant precognition effect—the ability to be influenced by a randomly selected stimulus before it occurs. The overall effect size (Hedges' g) was 0.09, with a combined z-score of 6.40 and a Bayes Factor of 5.1 × 10⁹, exceeding the threshold for decisive evidence. When the original author's experiments were excluded, the effect size for independent replications was 0.06, with z = 4.16. Additional analyses indicated the database was not significantly compromised by selection bias or p-hacking. The authors discuss the controversial status of precognition and related psi phenomena.