Show a table of Radin effect sizes

Question

ESP-Nexus Discovery Lab · Accepted Answer

The structured evidence block covers five studies from the ESP-Nexus library associated with Dean Radin. Before reading the figures, note an important scope qualification: the library’s share of the published literature on Radin’s work has not been measured, so what follows is a summary of what the library currently holds, not a settled account of his full output or the field more broadly.

A note on format

The request was for a table, but ESP-Nexus answers render in Markdown without table support, so the findings are presented as structured bullets below. The full evidence table appears in the Sources panel directly beneath this answer.

Metric mix — these are not comparable

The five rows use different, non-comparable metrics — two report standardized effect sizes, two report z-scores only, and one reports only a study count. They cannot be averaged or pooled into a single “overall effect size.”

Study-by-study outcomes

Radin (1989) — a large aggregate of experimental studies (k=597 individual studies), direction positive. No pooled effect size metric is recorded in the library for this row beyond the study count.

Bierman (2000) — a reanalysis of three datasets, reporting a Stouffer composite z=2.748, p=0.003, direction positive. Note this is a reanalysis by Bierman, not a primary Radin-authored pooling.

Radin (2004) — four combined experiments on pre-stimulus effects, with a weighted mean standardized effect size of ES=0.064 (expressed as z/√n), z=4.04, p=1.3×10⁻⁵, N=4,569, direction positive.

Radin (2012) — four double-slit experiments combined (all sessions, Table V), standardized ES=−0.2 (z/√n form), z=−2.17, p=0.015, N=121, direction listed as positive. The negative ES sign warrants attention: the ESP-Nexus study audit page notes that per-experiment summary statistics are given in Tables I–VI and that no per-session data table is published in the text — readers should consult that audit for the full picture of how this combined figure is derived.

Radin (2013) — three experiments combined via unweighted Stouffer z=6.81, p=4.8×10⁻¹², k=3, direction positive. The study audit page flags that the large modeled effect sizes in this paper come from a subset of 12 sessions chosen because they were already significant, and that the paper carries four internal numerical inconsistencies — that audit is essential context before treating z=6.81 as a settled headline figure.

Unsettled signals the evidence carries

The 2012 combined ES is negative in sign while the directional flag is positive — these pull against each other and the audit page is the right place to resolve the tension.
Effect sizes where they are reported are small (ES≈0.064 in 2004), requiring large samples or meta-analytic aggregation to detect reliably.
The 2013 result, while the largest z in the set, is subject to the selection concerns noted in the audit.
Heterogeneity across paradigms (random-event generators, pre-stimulus physiology, double-slit interference) means these rows are not a coherent replication series — each tests a different proposed mechanism.

For Radin’s broader research profile, see his ESP-Nexus scientist page.

Paper	Reported finding	Effect / significance	Basis
Radin et al. (2013), Physics Essays [source]	Combined three-experiment unweighted Stouffer z.	z = 6.81, p = 4.8 × 10⁻¹²	k = 3 events/tests
Radin et al. (2012), Physics Essays [source]	Experiments 1-4 combined – all sessions.	ES -0.2, z = -2.17, p = .015	k = 4 events/tests; N = 121
Radin (2004), Journal of Scientific Exploration [source]	All four experiments combined – weighted mean pre-stimulus effect size.	ES 0.064, z = 4.04, p = 1.3 × 10⁻⁵	k = 4; N = 4569
Bierman, Dick J. (2000), Proceedings of the 43rd Annual Convention of the Parapsychological Association	Stouffer composite across the three reanalysed datasets.	z = 2.748, p = .003	3 studies
Radin et al. (1989), Foundations of Physics [source]	Experimental studies – mean effect size per study.	—	597 studies