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Predictive Validity of Accommodated LSAT Scores (TR-01-01) ![]() Andrea E. Thornton, Lynda M. Reese, Peter J. Pashley, and Susan P. Dalessandro Executive Summary This study was undertaken to evaluate the predictive validity of Law School Admission Test (LSAT) scores earned under accommodated testing conditions. Of special interest was the validity of scores obtained by test takers who were accommodated under nonstandard time conditions (i.e., accommodations that included extra testing time). Within this group, separate predictive validity analyses were also conducted for those test takers who were classified within Attention Deficit/Hyperactivity Disorder (ADHD), Learning Disability (LD), Neurological Impairment, and Visual Impairment subgroups. Of secondary interest was the validity of LSAT scores obtained by test takers who were accommodated under standard time conditions (i.e., accommodations that did not include extra testing time).
These findings are consistent with those found previously by Wightman in her research report 93-03 published by LSAC. This current study also indicates that:
The results from this study indicate that LSAT scores obtained under accommodated conditions that included extra testing time should be evaluated with care. However, more data and further analyses will be required before more specific statements can be made, such as whether UGPA is a better predictor of FYA than LSAT scores for test takers accommodated with extra testing time.
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