General formulae for transforming Pearson’s r to the scale of Cohen’s d
Applied Psychological Measurement
Published online on July 03, 2026
Abstract
Applied Psychological Measurement, Ahead of Print.
The traditional thresholds for product-moment correlation (r) usually condensed in terms of “very small,” “small,” “medium,” “large,” “very large,” and “huge” are derived on the scale ofd. Properly transforming an estimate ofrto the scale of Cohen’sd...
The traditional thresholds for product-moment correlation (r) usually condensed in terms of “very small,” “small,” “medium,” “large,” “very large,” and “huge” are derived on the scale ofd. Properly transforming an estimate ofrto the scale of Cohen’sd...