Presentiment

Presentiment

Audience

Difficulty	Introductory

Presentiment is the experimental finding that autonomic physiological responses (heart rate, skin conductance, pupil dilation) appear to anticipate future emotionally-significant stimuli by 1-10 seconds — before the stimulus has been randomly selected. It is the most rigorously-tested form of putative precognition in the Anomalous_Cognition literature.

The term was coined by Dean Radin and the protocol developed in the mid-1990s. The phenomenon was thrust into mainstream debate by Daryl Bem's controversial 2011 Journal of Personality and Social Psychology paper, and meta-analytically synthesised by Mossbridge, Tressoldi, and Utts in 2012.

The protocol

1. Subject is connected to physiological monitoring: typically skin conductance (electrodermal activity) and/or heart rate.
2. Stimuli pool — a set of images covering a range of emotional valences (calm, neutral, emotionally-arousing, fear-inducing).
3. Trial sequence:
   1. Baseline recording (~ 10 seconds).
   2. Pre-stimulus interval (5-10 seconds) — physiological response recorded.
   3. Random selection of stimulus image by computer — the stimulus is selected after the pre-stimulus interval has begun.
   4. Stimulus presented.
   5. Post-stimulus response recorded.
4. Analysis — compare pre-stimulus autonomic response on trials with later-presented emotional vs. calm stimuli.

The critical comparison: before the stimulus is selected, does the subject's body "know" what category will come?

Result

Across studies, subjects' pre-stimulus autonomic response is statistically larger for trials with later-presented emotional stimuli than for trials with later-presented calm stimuli.

Mossbridge, Tressoldi, Utts 2012 meta-analysis:

• 26 studies included after filtering for quality criteria.
• Aggregate effect size d ≈ 0.21 (small but robust).
• p-value < 0.001 for the aggregate effect.
• Heterogeneity moderate (I² ~ 50%), but the direction is consistent across studies.

The Bem 2011 paper

Daryl Bem's 2011 paper Feeling the Future (Journal of Personality and Social Psychology 100: 407-425) reported nine experiments with positive precognition effects, including:

• Retroactive priming — current performance affected by future-presented primes.
• Retroactive habituation — current habituation accelerated by future exposure.
• Retroactive recall — words to be later-studied are better-recalled.

Total: 8 of 9 experiments significant; meta-analytic effect size d ≈ 0.22.

Publication of this paper in a mainstream journal sparked substantial controversy and is often credited as a major catalyst for the broader replication crisis in psychology — see Replication_Crisis_in_Parapsychology.

Replication efforts

The post-Bem-2011 replication landscape is mixed:

• Galak et al. 2012 — 7 attempted replications of Bem's retroactive-recall experiment; null results.
• Wagenmakers et al. 2011 — Bayesian reanalysis of Bem 2011; concluded evidence was weak (Bayes factor against the null only modestly supports H1).
• Bem et al. 2015 — meta-analysis of 90 replications by 33 independent labs; aggregate effect size 0.09, still positive but smaller than original.
• Kekecs et al. 2023 — preregistered multi-lab replication of Bem retroactive-recall experiment; null result.

The current consensus: Bem 2011's specific experimental paradigms do not replicate at the original effect sizes. However, the broader Mossbridge et al. 2012 presentiment meta-analysis is across a different set of paradigms (autonomic response, not behavioural recall) and shows more consistent positive effects.

The two presentiment paradigms

It is important to distinguish:

Autonomic-response presentiment

The Mossbridge-Radin paradigm: pre-stimulus skin conductance / heart rate / pupil dilation, with computer-controlled random stimulus selection. The aggregate effect across this paradigm remains robust in meta-analyses.

Behavioural-response presentiment

The Bem-2011 paradigm: behavioural-task performance modified by future stimuli. The replication record here is poor; most direct replications are null.

The two paradigms test different theoretical predictions and have different methodological vulnerabilities. The framework's strongest empirical support comes from the autonomic-response paradigm.

Critique and methodological vulnerabilities

1. Multiple comparisons — pre-stimulus interval includes many time points; choice of analysis window may be post hoc. Modern protocols pre-register the analysis window.
2. Stimulus-selection randomisation — must be truly random and not influenced by any subtle environmental cue. Hardware RNGs and pre-recorded stimulus sequences address this.
3. Subject expectation effects — subjects who know the protocol may differentially respond to perceived stimulus probabilities. Addressed by blinded protocols.
4. Publication bias — assessed by Mossbridge et al. 2012; effect survives reasonable estimates of unpublished nulls.

Connection to the framework

In the psionic framework:

• Retarded vs. advanced fields — the standard treatment of EM uses retarded Green's functions (causes precede effects). Wheeler-Feynman absorber theory (1945) uses time-symmetric (half retarded + half advanced) Green's functions. The framework treats the ψ field analogously: there may be small advanced-Green's-function contributions to ψ correlations, producing apparent "future-causes-present" effects at the autonomic level.
• Small effect size — consistent with the framework's expectation that α (the ψ-coupling) is small.
• Autonomic vs. cognitive — the framework predicts that ψ-effects appear more clearly in pre-conscious / autonomic responses than in conscious-cognitive responses, because conscious access requires additional neural integration that filters and degrades the ψ-mediated signal.

This is the framework's interpretation; mainstream consensus remains skeptical of the underlying empirical claim.

See Also

• Anomalous_Cognition
• Remote_Viewing
• PEAR_Program
• Replication_Crisis_in_Parapsychology
• Falsification_Criteria_for_Psionics

References

• Bem, D. J. (2011). "Feeling the future: Experimental evidence for anomalous retroactive influences on cognition and affect." Journal of Personality and Social Psychology 100: 407–425.
• Mossbridge, J., Tressoldi, P., Utts, J. (2012). "Predictive physiological anticipation preceding seemingly unpredictable stimuli: A meta-analysis." Frontiers in Psychology 3: 390.
• Radin, D. I. (2004). "Electrodermal presentiments of future emotions." Journal of Scientific Exploration 18: 253–273.
• Galak, J., LeBoeuf, R. A., Nelson, L. D., Simmons, J. P. (2012). "Correcting the past: Failures to replicate psi." Journal of Personality and Social Psychology 103: 933–948.
• Bem, D. J., Tressoldi, P., Rabeyron, T., Duggan, M. (2015). "Feeling the future: A meta-analysis of 90 experiments on the anomalous anticipation of random future events." F1000Research 4: 1188.