著者
鈴川 由美 豊田 秀樹
出版者
The Japanese Psychological Association
雑誌
心理学研究 (ISSN:00215236)
巻号頁・発行日
vol.83, no.1, pp.51-63, 2012
被引用文献数
1 2

This study analyzed the statistical power of research studies published in the "Japanese Journal of Psychology" in 2008 and 2009. Sample effect sizes and sample statistical powers were calculated for each statistical test and analyzed with respect to the analytical methods and the fields of the studies. The results show that in the fields like perception, cognition or learning, the effect sizes were relatively large, although the sample sizes were small. At the same time, because of the small sample sizes, some meaningful effects could not be detected. In the other fields, because of the large sample sizes, meaningless effects could be detected. This implies that researchers who could not get large enough effect sizes would use larger samples to obtain significant results.

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