It has been claimed that experimenter effects may account for inconsistent findings in the study of cognitive correlates of paranormal belief and in psi research. The present study investigates these 2 strands by having 2 experimenters each administer to 30 participants a paranormal belief questionnaire, 2 tests of cognitive ability (a syllogistic reasoning task and Ravens Progressive Matrices), and an ESP task. For all 60 participants, a significant negative correlation was found between paranormal belief and syllogisms performance. This correlation was attributable to just 1 of the experimenters, and the experimenters' belief-cognitive ability correlations significantly differed, thus demonstrating an experimenter effect for this measure. Additional post hoc analyses were conducted to clarify the mechanism underlying the belief-cognitive ability correlation. There was no evidence of an experimenter effect for the ESP task.
|Number of pages||15|
|Journal||Journal of Parapsychology|
|Publication status||Published - 1 Dec 2002|