Computes Sackett-Ellingson-style composite d for a weighted battery.
Usage
composite_d(d, weights = NULL, predictor_cor = NULL, sd = NULL)
Arguments
- d
Vector of standardized group differences or effect sizes.
- weights
Composite weights. Defaults to equal weights.
- predictor_cor
Predictor correlation matrix. Defaults to identity.
- sd
Predictor standard deviations. Defaults to ones.
Value
Composite effect size.
References
Sackett, P. R., & Ellingson, J. E. (1997). The effects of forming multi-
predictor composites on group differences and adverse impact. Personnel
Psychology, 50, 707-721.
Examples
# Literature: Sackett and Ellingson (1997).
composite_d(d = c(.80, .30), weights = c(.7, .3),
predictor_cor = matrix(c(1, .30, .30, 1), 2, 2))
#> [1] 0.7735903
