attenuate.d: Attenuate 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 emulated by this function.
Usage
attenuate.d(d, reliability)
Arguments
d
The value of Cohen's d (that would be obtained with perfect measurements)
reliability
The reliability of the measurements of the continuous variable
Value
The attenuated value of Cohen's d
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<U+2013>61.
https://doi.org/10.1177/109442810141003