The goal of this page is to keep track of our visualizations of the effect size list based on the Visible Learning research. John Hattie constantly updates his list. He has first published 138 effects in Hattie (2009) “Visible Learning”, then 150 effects in Hattie (2011) “Visible Learning for Teachers”, and most recently a list of 195 effects in Hattie (2015) “The Applicability of Visible Learning to Higher Education”. His research is now based on nearly 1200 meta-analyses – up from the 800 in Visible Learning (2009). According to Hattie the story underlying the data has hardly changed over time even though some effect sizes were updated and we have some new entries to the list.
Below you can find a backup of our first visualization of (only) 138 influences and effect sizes related to student achievement. This is the original image that has been shared widely over the internet and social networks. Click here to see an updated versions of the Hattie ranking.
Hattie Ranking of Effect Sizes