Why Psychologists Should by Default Use Welch’s t-test Instead of Student’s t-test

When comparing two independent groups, psychology researchers commonly use Student’s 't'-tests. Assumptions of normality and homogeneity of variance underlie this test. More often than not, when these conditions are not met, Student’s 't'-test can be severely biased and lead to i...

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Bibliographic Details
Main Authors: Marie Delacre, Daniël Lakens, Christophe Leys
Format: Article
Language:English
Published: Ubiquity Press 2017-04-01
Series:International Review of Social Psychology
Subjects:
Online Access:https://www.rips-irsp.com/articles/82