disattenuate.d: Disattenuate a Cohen's d estimate for unreliability in the continuous variable
Description
Measurement error (i.e. the complement of reliability) results in a downward bias
of observed effect sizes. This attenuation can be reversed by disattenuation.
Usage
disattenuate.d(d, reliability)
Value
The disattenuated value of Cohen's d
Arguments
d
The (attenuated) value of Cohen's d (i.e. the value as observed in the sample,
and therefore attenuated (decreased) by measurement error in the continuous variable).
reliability
The reliability of the measurements of the continuous variable
Author
Gjalt-Jorn Peters & Stefan Gruijters
References
Bobko, P., Roth, P. L., & Bobko, C. (2001). Correcting
the Effect Size of d for Range Restriction and Unreliability.
Organizational Research Methods, 4(1), 46–61.
tools:::Rd_expr_doi("10.1177/109442810141003")