Limitations of meta-analysis

Here’s an interesting blog article looking at how effect sizes of educational interventions (as measured by standardised reading and maths tests) decline as students get older. It’s an important caveat to bear in mind when looking at meta-analyses of effective teaching strategies – as studies carried out on primary age children will typically find bigger effects than studies carried out on secondary children.

ollieorange2: Visible Learning – How Age affects the Effect Size

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