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JF Bell - Effective Education, 2011 - Taylor & Francis

The small-study effect in educational trials.

Educational trials

Bell

GSID: n_mMw6OOfUgJ

Excerpt

The small-study effect refers to the observation that effect sizes from initial small-scale trials tend to be higher than those obtained from larger trials. This paper reviews the potential causes of this effect. In particular, it also investigates the effect of making the erroneous …

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