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The Use of Multiple Moderators in Academic Prediction

Klein, Stephen P.; Rock, Donald A.; Evans, Franklin R.
Publication Year:
Report Number:
ETS Research Bulletin
Document Type:
Page Count:
Subject/Key Words:
Academic Achievement, Background, Family Characteristics, Grade Prediction, Law Students, Predictor Variables


The present study examined whether several student background characteristics (e.g., father's occupation) could act as moderators leading to the differential prediction of law school grades. A new procedure based on a modification of Ward's hierarchical grouping technique was used for this purpose on the validation sample (n = 201). This resulted in a four-group solution using five moderators. Separate regression equations were constructed for each group and applied to corresponding groups in the cross-validation sample (n = 201). The results of these analyses indicated that the new multiple moderator technique could reliably identify groups that differed in predictability.

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