摘要:The purpose of this study was to determine the extent and context of effect-size ( es ) reporting in Mexican psychology journals. 1554 statistical tests, distributed across 70 articles published in Mexican psychology journals in 2015, were analyzed with a checklist for es reporting practices. Results suggest that es reporting varies according to different types of tests, with journals that require it show slightly higher percentages; however, percentages of justification, definition and discussion on its importance are low, across all types of tests. Qualitative results about the context of es reporting suggest a broader problem in psychologists understanding and usage of null hypothesis significance testing. Recommendations are made for journal editors, which aim at a better usage and understanding of these statistical methods.
关键词:Effect-size; null hypothesis significance test; confirmation bias. Tamaño del efecto; prueba de significancia de hipótesis nula; sesgo de confirmación.