This post refers to an article by Canadian statistician Pierre-Jérôme Bergeron in McGill Journal of Education / Revue des sciences de l’éducation de McGill John Hattie’s work, and particularly his seminal book Visible Learning, ranks among the best cited publications in education research. To many, the results of his many meta-analyses of more than 50,000 […]

Kelvin Smythe has been critically following Hattie’s work for a long time and is almost his absolute antipode. Smythe follows up on the recent publication of methodological flaws in Hattie’s research (see earlier posts on this blog here and here). In addition, he is critical of the connection between Hattie’s rsearch and the neoliberal education […]

In this second post about the statistics in ‘Visible Learning’, the author, British mathematician Ollieorange2, asks some uncomfortable questions about the self-correcting capacity of the education science community. For me, two questions remain: If half of the statistics are wrong, how does that affect the recommendations to teachers based on those statistics, and How much […]

What to make of this? John Hattie’s book is one of the most influential books on education to appear in the last few years. For some, it has almost the status of an education bible. If the statement “Half of the statistics in ‘Visible Learning’ are wrong”, can be sustained, what consequences does it have […]