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How Many Participants Do We Have to Include in Properly Powered Experiments? A Tutorial of Power Analysis with Reference Tables
Given that an effect size of d = .4 is a good first estimate of the smallest effect size of interest in psychological research, we already need over 50 participants for a simple comparison of two within-participants conditions if we want to run a study with 80% power. This is more than current pract...
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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Ubiquity Press
2019
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6640316/ https://www.ncbi.nlm.nih.gov/pubmed/31517234 http://dx.doi.org/10.5334/joc.72 |