(2015) , (1) right skewed p-curves are indicative of evidential value, as true effects tend to be highly significant, (2) flat p-curves indicate no evidential value and (3) left skewed p-curves are indicative of flexibility in data-analysis (p-hacking), as these contain many p-values just below .05.
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The effects of physical activity on brain structure and neurophysiological functioning in children: A systematic review and meta-analysis.
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