Dahlke, J. A., & Sackett, P. R. (2017). The Relationship Between Cognitive-ability Saturation and Subgroup Mean Differences Across Predictors of Job Performance. Journal of Applied Psychology. Abstract The authors quantify the conventional wisdom that predictors’ correlations with cognitive ability are positively related to subgroup mean differences. Using meta-analytic and large-N data from diverse predictors, they […]

Emil O. W. Kirkegaard1 Abstract Item-level data from Raven’s Standard Progressive Matrices was compiled for 12 diverse groups from previously published studies. Jensen’s method (method of correlated vectors) was used on every possible pair of groups with available data (45 comparisons). The mean Jensen coefficient was about .50. Very few were negative. Spearman’s hypothesis is […]