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Adrian Parker — Research, Data, and Critical Commentary

The ESP-Nexus page for Adrian Parker (Adrian Parker) is currently a placeholder pending a full content pass, so what follows is grounded in the sources retrieved for this question rather than a completed site profile.

Who the sources show Parker to be

The retrieved sources place Adrian Parker at the Department of Psychology, University of Gothenburg, Sweden ^[3]. The bulk of the retrieved work appears as co-authored empirical and psychometric research published in Frontiers in Psychology between 2017 and 2022, alongside a solo theoretical paper in Journal of Scientific Exploration ^[3]. Parker’s co-authors across these studies are consistently Neil Dagnall, Kenneth Graham Drinkwater, Andrew Denovan, Peter J. Clough, and Álex Escolà-Gascón ^{[1][2][4][5][6]}.

Research streams evident in the retrieved sources

1. Psychometrics of paranormal belief — the Revised Paranormal Belief Scale (RPBS)

Parker and colleagues have published extensively on the factorial structure of the Revised Paranormal Belief Scale (RPBS), the most widely used self-report measure of paranormal belief ^[4]. A large-sample confirmatory factor analysis (CFA) using AMOS 24, testing ten competing models against a sample of N = 3,744, found that a seven-factor bifactor model produced acceptable fit on all indices ^[6]. The two-factor oblique model — which had been a common solution in prior literature — showed unacceptable fit on nearly all indices in that same sample ^[6]. Women scored significantly higher on paranormal belief than men in that dataset, with a medium effect size ^[6].

A separate, smaller-sample CFA (N = 222) similarly found that the two-factor RPBS model yielded marginal or unacceptable fit, though fit improved when specific within-factor error correlations were permitted ^[5].

2. Schizotypy, probabilistic reasoning, and paranormal belief

Denovan, Dagnall, Drinkwater, and Parker (2018) applied latent profile analysis (LPA) to schizotypy and paranormal belief, identifying four distinct participant classes:

Gender differences in paranormal belief were also significant in that sample ^[4]. The framework treats paranormal belief as heterogeneous rather than unitary — a consistent methodological position across the Parker-affiliated work.

3. Urban legends, reality testing, and schizotypy

Dagnall, Denovan, Drinkwater, Parker, and Clough (2017) examined urban legend endorsement alongside paranormal belief, finding that reality testing and schizotypy both predicted paranormal belief and urban legend acceptance ^[5]. The structural equation modeling showed that experiential (intuitive) processing styles, rather than analytical ones, mediated these relationships — believers tended toward self-validating inference patterns.

4. Executive functioning and perceived paranormal ability

Two 2021–2022 papers co-authored by Parker examined executive functions in relation to paranormal belief and self-reported paranormal ability ^[1][2].

Drinkwater, Dagnall, Denovan, Parker, and Escolà-Gascón (2021) contrasted participants reporting no paranormal ability against those reporting ability or active practice. A MANOVA showed a significant overall effect (Pillai’s criterion = 0.54, F(18, 978) = 20.13, p < 0.001). Contrasts between the “no ability” group and the combined “ability/practising” groups showed:

Decision-making was the notable null in that set — the only contrast that did not reach significance ^[2].

The 2022 LPA follow-up identified four paranormal experience profile classes and found a significant main effect of class on paranormal belief, executive function, working memory, and decision making (Pillai’s trace = 0.57, F(12, 1,533) = 30.40, p < 0.001, η² = 0.19, a large effect size) ^[1]. A second MANOVA on emotion regulation and everyday memory subscales produced a medium effect (Pillai’s trace = 0.16, F(15, 1,530) = 5.88, p < 0.001, η² = 0.06), with cognitive reappraisal the single non-significant subscale ^[1].

5. Theoretical work — “Thought-Forms Gone Rogue”

Parker’s solo 2021 paper in Journal of Scientific Exploration is explicitly theoretical and discursive, not a data report ^[3]. It proposes a framework drawing on the concept of “thought-forms” — mentally generated quasi-autonomous entities — as a bridging theory between psi-skeptical and psi-affirming accounts. The paper engages psychedelic research, consciousness studies, philosophy of will (citing Schopenhauer and the physicist-philosopher Bernard Kastrup), and neuroscience (including critique of strong neuro-determinism). Parker acknowledges the “preposterous” surface appearance of the thesis while arguing for internal consistency with modern research on autonomous entity experiences ^[3].

Skeptical critiques

What critics argue. The cross-sectional design used across the executive-functioning and belief studies is acknowledged by the authors themselves as vulnerable to common method variance (CMV) — a standard objection to self-report surveys where predictor and outcome are collected at the same time from the same respondents ^[1]. Critics of this design tradition argue that apparent associations between belief, schizotypy, and cognition may partly reflect shared method artifacts rather than genuine relationships.

What the experimental data show. The 2022 study explicitly names CMV as a limitation and describes procedural counter-measures: scale presentation was rotated across participants to reduce order effects, and additional procedural devices were implemented to reduce socially desirable responding ^[1][2]. Whether these procedural steps adequately address the core CMV concern is not settled within the retrieved sources — the authors raise the objection but do not claim to have eliminated it.

Analysis. The RPBS factorial structure debate ^[5][6] is a live empirical question: the two-factor model that much prior research assumed has shown poor fit in large-sample CFAs co-authored by Parker, but the seven-factor bifactor solution has not been universally adopted across the field. Parker’s theoretical 2021 paper ^[3] sits outside the empirical tradition of the other work and invites a different class of critique — primarily philosophical — which the retrieved sources do not address directly. Independent replication of the executive-functioning contrasts ^[2] outside the Dagnall–Drinkwater–Parker collaborative group has not been documented in the retrieved sources.

The full Adrian Parker profile, once generated, will be at Adrian Parker — ESP-Nexus.