ERIC Number: ED469183
Record Type: Non-Journal
Publication Date: 2002-May
Reference Count: N/A
Predictive Validity of Accommodated LSAT Scores. Technical Report. LSAC Research Report Series.
Thornton, Andrea E.; Reese, Lynda M.; Pashley, Peter J.; Dalessandro, Susan P.
This study was undertaken to evaluate the predictive validity of the Law School Admission Test (LSAT) 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). Separate predictive validity analyses were conducted for test takers classified as having Attention Deficit/Hyperactivity Disorder, Learning Disabilities, Neurological Impairment, and Visual Impairment. The measure used to assess the predictive validity of the LSAT for these groups was law school first year average (FYA). The predictive validity of the undergraduate grade point average was also evaluated, as was the combination of LSAT and UGPA. The sample was drawn from 590 entering law school classes from 168 law schools over 5 years. Results suggest that LSAT scores earned under accommodated testing conditions that included extra testing time are not comparable to LSAT scorers earned under standard timing conditions as evidenced by a tendency of the former to overpredict FYAs. Results for individual groups were consistent with the overall group result. The study also indicates that LSAT scores earned under standard timing conditions are comparable, regardless of whether other (nontiming related) accommodations are given. Results show that LSAT scores obtained under accommodated conditions that included extra testing time should be evaluated with care. (Contains 10 tables, 19 figures, and 20 references.) (SLD)
Publication Type: Numerical/Quantitative Data; Reports - Research
Education Level: N/A
Authoring Institution: Law School Admission Council, Newtown, PA.
Identifiers - Assessments and Surveys: Law School Admission Test