文章基本信息

标题：Cliff´s Delta Calculator: Un programa para calcular el tamaño del efecto no paramétrico al comparar dos grupos de observaciones
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作者：Guillermo Macbeth ; Eugenia Razumiejczyk ; Rubén Daniel Ledesma 等
期刊名称：Universitas Psychologica
印刷版ISSN：2011-2777
出版年度：2010
卷号：10
期号：2
页码：545-555
语种：English
出版社：Pontificia Universidad Javeriana
摘要：The Cliff´s Delta statistic is an effect size measure that quantifies the amount of difference between two non-parametric variables beyond p-values interpretation. This measure can be understood as a useful complementary analysis for the corresponding hypothesis testing. During the last two decades the use of effect size measures has been strongly encouraged by methodologists and leading institutions of behavioral sciences. The aim of this contribution is to introduce the Cliff´s Delta Calculator software that performs such analysis and offers some interpretation tips. Differences and similarities with the parametric case are analysed and illustrated. The implementation of this free program is fully described and compared with other calculators. Alternative algorithmic approaches are mathematically analysed and a basic linear algebra proof of its equivalence is formally presented. Two worked examples in cognitive psychology are commented. A visual interpretation of Cliff´s Delta is suggested. Availability, installation and applications of the program are presented and discussed.
关键词：statistical software, non-parametric statistics, effect size, Cliff´s Delta, psychological applications;programa estadístico, estadística no paramétrica, tamaño del efecto, Delta de Cliff, aplicaciones psicológicas