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Research Library

All reports in LSAC’s Research Library are available upon request. Executive summaries are available below for the latest LSAT Technical Reports and other research published within the last 10 years.

Looking for older reports? Consult the Research Archive

Current Research:

A Hierarchical Framework for Modeling Speed and Accuracy on Test Items (RR 05-02)

In the analysis of data for the Law School Admission Test (LSAT) and other similar standardized tests, a mathematical model called item response theory (IRT) is commonly used to estimate both the characteristics of the test questions (items) and the ability level of the test takers. Such analyses are based on the test takers’ correct and incorrect responses to the test items.