Study
My child is best: how parents' affection distorts assessment scales
Parents rate their own children generously, and it bends the scale rather than just shifting it.
Uses IELS parent-report data to show that affection does not simply inflate scores by a constant. It compresses the upper range and changes what the response categories mean, which breaks the comparability that parent reports are usually assumed to have. With Stefania Capecchi, University of Naples Federico II.
Part of IELS: Early Learning Measurement comparability
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