John Hattie is known for his evidence-based quantitative research on student achievement and his book Visible Learning, which has been described as the largest ever synthesis of meta-analyses of quantitative measures of the effect of different factors on educational outcomes.
Hattie needs little introduction. He’s the “meta-man”, or to be more accurate, the “meta-meta-man”. His magnum opus, Visible Learning, synthesised more than 800 meta-analyses and became a handbook for educators worldwide, drawn no doubt to its user-friendly ranking of teaching strategies by their impact on learning outcomes.
If you do happen to be new to Hattie’s work, then there are plenty of articles about his concept of visible learning on the web. In a nutshell Hattie’s Visible Learning research synthesises findings from 1,400 meta-analyses of 80,000 studies involving 300 million students, into what works best in education, and comes up with 250+ influences on student achievement. (Hattie’s work has been ongoing over many years so the figures relating to number of analyses etc. change according to the date of reporting).
Læs videre her: The Purposes of Education. John Hattie and Steen Larsen