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Hattie research5/20/2023 ![]() ![]() We discuss these findings in the light of the assumptions made in The power of feedback ( Hattie and Timperley, 2007). Furthermore, feedback has higher impact on cognitive and motor skills outcomes than on motivational and behavioral outcomes. A moderator analysis revealed that the impact is substantially influenced by the information content conveyed. Overall results based on a random-effects model indicate a medium effect ( d = 0.48) of feedback on student learning, but the significant heterogeneity in the data shows that feedback cannot be understood as a single consistent form of treatment. 2Melbourne Graduate School of Education, University of Melbourne, Parkville, VIC, AustraliaĪ meta-analysis (435 studies, k = 994, N > 61,000) of empirical research on the effects of feedback on student learning was conducted with the purpose of replicating and expanding the Visible Learning research ( Hattie and Timperley, 2007 Hattie, 2009 Hattie and Zierer, 2019) from meta-synthesis. ![]() 1Department of School Pedagogy, University of Augsburg, Augsburg, Germany.Benedikt Wisniewski 1*, Klaus Zierer 1 and John Hattie 2* ![]()
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