We report a theory-relevant post hoc analysis of 2 Dutch retro-priming experiments that were part of a large replication project of the retro-priming experiment by Bem and colleagues. This replication project sought to investigate the role of the experimenter in psi studies. The results of the retro-priming experiments performed by student research groups at the University of Amsterdam (N=61) and of the University Groningen (N=222) however did not replicate Bem’s earlier findings of an anomalous interference of a future stimulus on (...) response times. We report the results of these two studies here, but the over-all results will be reported elsewhere. Both Dutch studies used the exact same software as Bem and colleagues. However, both studies used different questionnaires. The questionnaires asked for information that in previous research had been associated with success in psi tasks and could help us to deal with individual differences but, above all, could be used as selection criteria for participants in future studies. In the Amsterdam study, there were 14 questions, while in the Groningen there were 55. A correlation analysis revealed several significant correlations between the psi-effect in the Bem task and questionnaire items. In this paper we focus on the post-hoc research question: Is this global composition of the correlation matrix anomalous, as suggested by Generalized Quantum Theory? Rather than using the subjective number of ‘significant’ correlations as a dependent variable, we introduced 2 objective measures directly representing the correlation values in the cells to characterize the ‘Connectivity’ in the matrix. Our analysis revealed ‘Connectivity’ to be marginally significant larger (p<0.075) in Groningen and significantly larger in the Amsterdam study (p<0.025). These results are discussed in the framework of the ‘Consciousness Induced Restoration of Time-symmetry’ (CIRTS) and ‘Generalized Quantum Theory’ (GQT) that predict that as soon as there are reasons to expect replicability (or control) the extra chance psi scores will disappear or reverse. The conclusion is that these results can be seen as support, though statistically not strong, for the GQT. (shrink)

(1997). Semantic fields and meaning: A bridge between mind and matter. World Futures: Vol. 48, The Concept of Collective Consiousness: Research Perspectives, pp. 161-170.

Over the past hundred years, a number of scientific investigators claim to have adduced experimental evidence for phenomena information” seems to behave like a weak signal that has to compete for the information-processing resources of the organism, a reduction of ongoing sensorimotor activity may facilitate ESP detection. Such a meaningful convergence of results suggests that psi phenomena may represent a unitary, coherent process whose nature and compatibility with current physical theory have yet to be determined. The theoretical implications and potential (...) practical applications of psi could be significant, irrespective of the small magnitude of psi effects in laboratory settings. (shrink)

According to Reactance Theory (Brehm & Brehm 1981), when an individual's freedom is threatened through some form of coercion, reactance usually sets in. Reactance is "a motivational state aimed at restoring the threatened freedom" (Silvia 2005:277), which may explain the tendency for believers ('sheep') to psi-hit and non-believers ('goats') to psi-miss. In this study, the effect of reactance on psi performance was investigated using Ertel's (2005a, 2005b) Ball Selection Test. It was hypothesized that goats are more reactant than sheep in (...) psi tests because goats are predisposed to disproving the psi hypothesis which requires noncompliance. In a laboratory setting, participants completed up to four runs (60 trials/run) of paranormal target-seeking (trying to predict the numbers on table tennis balls). Hit rate for the whole sample (N = 82) was significant, 21.06% (p =.002), where PMCE = 20%. Participants were randomly assigned to a control condition (n = 42) or treatment condition (n = 40) requiring them to read a statement that induced reactance. A significant reactance effect was found. There was no significant sheep-goat effect, but the relationship between psi-hit rates and sheep-goat scores was significant. Reactant goats scored significantly lower than control sheep, as expected, but not significantly lower than control goats. Pre-test scores on Tension and Confusion, as measured on The Profile of Mood States-Short Form (POMS-SF) (McNair, Lorr, & Droppleman 1971), predicted psi outcomes. Keywords: Ball Selection Test-ESP-PK-reactance-psi-sheep-goat effect. (shrink)

I address some specific problems in the two target articles offered here (Rao and Palmer/Alcock: Parapsychology review and critique), which are indicative of more general problems that plague the larger debate. Because such problems are rather typical of scientific conflict, I address general problems of assessment in a second section. In a final section. I make some comments about the future of this debate.

The effects of distant, intercessory prayer on health outcomes have been studied in a range of randomised, blinded clinical trials. However, while seeking the evidentiary status accorded this ‘gold standard’ methodology, many prayer studies fall short of the requirements of the World Medical Association's Declaration of Helsinki for the ethical conduct of trials involving human subjects. Within a sample of 15 such studies published in the medical literature, many were found to have ignored or waived key ethical precepts, including adequate (...) standards of care, patient confidentiality and informed consent. Prayer was considered in most studies to pose negligible or no risk to subjects, despite the fact that no clear mechanism of action nor any safety monitoring procedures were described. As a result, many studies did not meet basic ethical standards required of clinical trials of biophysical interventions, making application of their results ethically problematic. If investigators wish their data to adequately inform the use or rejection of intercessory prayer to improve health, these shortcomings should be addressed in future studies. (shrink)