Statistical power of psychological research: what have we gained in 20 years?
Statistical power of psychological research: what have we gained in 20 years?
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心理学研究的统计力量：20年来我们获得了什么？
DOI：
10.1037//0022-006x.58.5.646
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发表时间：
1990
影响因子：
5.9
通讯作者：
Rossi,JS
中科院分区：
文献类型：
--
作者：
Rossi,JS
在1982年出版的《异常心理学杂志》、《咨询与临床心理学杂志》和《人格与社会心理学杂志》上发表的221篇期刊文章中，计算了6,155个统计检验的功效。检测小型、中型和大型效应的能力为。17,. 57，所以。83、分别科恩（1962）进行第一次权力调查20年后，心理学研究的权力仍然很低。这些结果的影响，关于扩散的I型错误在已发表的文献中，复制研究的失败，和解释无效（阴性）的结果强调。一个例子是使用功率分析，以帮助解释无效的结果，通过设置可能的影响幅度的上限。统计功率分析的局限性，对未来研究的建议，计算信息的来源，以及提高功率的建议进行了讨论。（PsycINFO数据库记录（c）2016阿帕，保留所有权利）
Power was calculated for 6,155 statistical tests in 221 journal articles published in the 1982 volumes of the Journal of Abnormal Psychology, Journal of Consulting and Clinical Psychology, and Journal of Personality and Social Psychology. Power to detect small, medium, and large effects was. 17,. 57, and. 83, respectively. 20 years after Cohen (1962) conducted the first power survey, the power of psychological research is still low. The implications of these results concerning the proliferation of Type I errors in the published literature, the failure of replication studies, and the interpretation of null (negative) results are emphasized. An example is given of the use of power analysis to help interpret null results by setting probable upper bounds on the magnitudes of effects. Limitations of statistical power analysis, suggestions for future research, sources of computational information, and recommendations for improving power are discussed.(PsycINFO Database Record (c) 2016 APA, all rights reserved)