Chat with Dylan Wiliam: Debates on Meta-Analysis

Dylan Wiliam, a renowned education and assessment scholar, dives into the intricacies of meta-analysis and effect sizes. He critiques traditional metrics in educational research, emphasizing the importance of rigorous evaluations and transparency. The discussion covers the nuances of interpreting effect sizes and the significance of preregistration and replication for trustworthy results. Wiliam also debates the merits of randomized controlled trials versus meta-analyses, using real examples to illustrate how context influences educational interventions.