[IPAC-List] Differential prediction generalization: a new concept

Joel Wiesen jwiesen at appliedpersonnelresearch.com
Fri Sep 30 10:35:10 EDT 2016


A new Aguinis et al. study again shows that the absence of differential 
prediction seen in aggregational analyses of criterion related validity 
studies hides actual differential prediction in both directions (under 
prediction and over prediction) seen in individual studies.

The authors summarize with this analogy:
"The British writer and politician Benjamin Disraeli (1804–1881) stated
... 'A man eats a loaf of bread, and another man eats nothing; 
statistics is the science that tells us that each of these men ate half 
a loaf of bread.'"

Aguinis, H., Culpepper, S. A. & Pierce, C. A. (2016) Differential 
prediction generalization in college admissions testing. Journal of 
Educational Psychology, 108, 1045-1059.

Joel P. Wiesen, Ph.D., Director
Applied Personnel Research
62 Candlewood Road
Scarsdale, NY 10583-6040
(617) 244-8859

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