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- Title
Prospective Statistical Power: Sample Size Recommendations for the Investigation of the Main Parapsychological Phenomena.
- Authors
TRESSOLDI, PATRIZIO
- Abstract
The aim of this paper is to offer a practical guideline for researchers investigating parapsychological phenomena to choose appropriate sample sizes to achieve a statistical power equal to or above 0.80. The availability of different meta-analyses related to different parapsychological phenomena allow a sufficient estimation of the expected effect sizes, which usually range from small to very small. With these measures, it is possible to estimate the numerosity of sample sizes necessary to achieve a level of statistical power that can facilitate the replication of different parapsychological phenomena. I discuss ways to deal with the investigation of phenomena with very small effect sizes requiring very large sample sizes.
- Subjects
PARAPSYCHOLOGY; PSYCHIC ability; PSYCHOKINESIS; MENTAL healing
- Publication
Journal of Scientific Exploration, 2016, Vol 30, Issue 1, p10
- ISSN
0892-3310
- Publication type
Article