EFFECT SIZE By N., Sam M.S. - 12 The size of an effect in a study. See combing effect sizes- statistical significance. EFFECT SIZE: "The effect size can be an indication of strength of a relationship or mean difference in a group." Related Psychology Terms Discrimination and Mental Illness in the LGBT Population A Comparison of Maternal and Paternal Filicide Evaluation of a Qualitative Study CLINICAL PSYCHOLOGY Evaluation of a Quantitative Study ASTHENIC REACTION (Neurasthenia) The Anatomy of Research and the Scientific Method SOCIAL NORM (Group Norms) LEARNING ADDS Ethics and Legal Course: Landmark Legal Case Cite this page: N., Sam M.S., "EFFECT SIZE," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/effect-size/ (accessed December 9, 2022).