Hattie's Barometer of Influence 0.0 Negative © John Hattie Visible Learning 0.15 0.4 Medium 1.2 High Reverse Effects Developmental Effects Teacher Effects 0.7 1.0 Zone of Desired Effects -0.2 Low Teacher-student relationships d=0.72 0.5 0.6 0.8 0.9 1.1
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