Reference code: | PT/FB/BL-2014-480.04 |
Location: | BF-GMS
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Title:
| Experimenter effect and replication in psi research II: A global initiative
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Publication year: | 2018
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Abstract/Results:
| ABSTRACT
This replication issue in parapsychology was studied through the examination of experimenter and participant belief in psi and their impact on the outcome of a psi task. This series of three formal experiments employed a standardized psi protocol developed by Daryl Bem that has been the focus of several recent replication attempts and that allows for a systematic collection of data under wellcontrolled conditions. A session lasted no more than 30 minutes per subject. Specifically, the replication protocol tested the retroactive priming aspect of experiment 4 of Bem (2011) by examining reaction time for congruent or incongruent pairing of words and pictures. Study 1 examined expectancies of 32 experimenters and 512 subjects. Study 2 manipulated priming for expectancies by showing either randomized pro or anti-psi statements (for participants) and videos (for 32 experimenters), to assess the experimenters’ and/or expectation using questionnaires in 640 participants. In this article, we are reporting the results of Study 2. The results of the psi task are the dependent measure for both the psi replication attempts and for the experimenters’ and subjects’ expectancy effects. All analyses were run according to the document pre-registered prior to the start of the experiment. Although a trend in the expected direction was observed when comparing congruent image-word pairs versus incongruent ones for all subject combined, it fails to reach the 0.05 (two-tailed) significant threshold. No effect of subjects’ expectancy was observed. Study 3, which is now in process, uses implicit measures to examine expectancies of 32 experimenters and 512 participants.
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Accessibility: | Document exists in file
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Language:
| eng
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Author:
| Schlitz, M.
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Secondary author(s):
| Bem, D., Cardeña, E. , Lyke, J., Grover, R., Blackmore, S., Tressoldi, P., Roney-Dougal, S., Bierman, D., Jolij, J., Lobach, E., Marcusson-Clavertz, D., Hartelius, G., Delorme, A.
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Document type:
| Conference abstract
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Number of reproductions:
| 2
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Reference:
| Schlitz, M., Bem, D., Cardeña, E., Lyke, J., Grover, R., Blackmore, S., ... Delorme, A. (2018). Experimenter effect and replication in psi research II: A global initiative. Abstracts of Presented Papers of the 61st Annual Convention of the Parapsychological Association (p. 23). Petaluma, USA: Parapsychological Association
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Indexed document: | No
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Keywords: | Priming / Retro-active facilitation / Experimenter effect / Mindset
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Experimenter effect and replication in psi research II: A global initiative |
Final report - The Role of Experimenter and Participant Mindset in the Replication of Psi Experiments: Phase II of a Global Initiative