LSAC Resources - Research

Alphabetical Listing of Current Computerized Testing Reports

Alternative Approaches to Updating Item Parameter Estimates in Tests With Item Cloning (CT 03-01)
by Cees A. W. Glas, University of Twente, Enschede, The Netherlands

• Alternative Approaches to Updating Item Parameter Estimates in Tests With Item Cloning (CT 03-01) - Executive Summary
• Alternative Approaches to Updating Item Parameter Estimates in Tests With Item Cloning (CT 03-01) - Full Research Report (PDF)

A Comparison of Item-Selection Methods for Adaptive Tests With Content Constraints (CT 04-02)
by Wim J. van der Linden, University of Twente, Enschede, The Netherlands

• A Comparison of Item-Selection Methods for Adaptive Tests With Content Constraints (CT 04-02) - Executive Summary
• A Comparison of Item-Selection Methods for Adaptive Tests With Content Constraints (CT 04-02) - Full Research Report (PDF)

Computer Use and Preferences Among LSAT Takers (CT 05-01)
by Ann Gallagher, Andrea E. Thornton, Deborah A. Suto, and Christopher W. T. Chiu

• Computer Use and Preferences Among LSAT Takers (CT 05-01) - Executive Summary
• Computer Use and Preferences Among LSAT Takers (CT 05-01) - Full Research Report (PDF)

Constraining Item Exposure in Computerized Adaptive Testing with Shadow Tests (CT 02-03)
by Wim J. van der Linden and Bernard P. Veldkamp, University of Twente, Enschede, The Netherlands

• Constraining Item Exposure in Computerized Adaptive Testing with Shadow Tests (CT 02-03) - Executive Summary
• Constraining Item Exposure in Computerized Adaptive Testing with Shadow Tests (CT 02-03) - Full Research Report (PDF)

Detection of Advance Item Knowledge Using Response Times in Computer Adaptive Testing (CT 03-03)
by Rob R. Meijer and Leonardo S. Sotaridona, University of Twente, Enschede, The Netherlands

• Detection of Advance Item Knowledge Using Response Times in Computer Adaptive Testing (CT 03-03) - Executive Summary
• Detection of Advance Item Knowledge Using Response Times in Computer Adaptive Testing (CT 03-03) - Full Research Report (PDF)

Equating an Adaptive Test to a Linear Test (CT 04-01)
by Wim J. van der Linden, University of Twente, Enschede, The Netherlands

• Equating an Adaptive Test to a Linear Test (CT 04-01) - Executive Summary
• Equating an Adaptive Test to a Linear Test (CT 04-01) - Full Research Report (PDF)

Evaluating Equating Error in Observed-Score Equating (CT 04-03)
by Wim J. van der Linden, University of Twente, Enschede, The Netherlands

• Evaluating Equating Error in Observed-Score Equating (CT 04-03) - Executive Summary
• Evaluating Equating Error in Observed-Score Equating (CT 04-03) - Full Research Report (PDF)

Final Report: LSAC Skills Analysis Law School Task Survey (CT 02-02)
by Stephen W. Luebke, Kimberly A. Swygert, Lori D. McLeod, Susan P. Dalessandro, and Louis A. Roussos

• Final Report: LSAC Skills Analysis Law School Task Survey (CT 02-02) - Executive Summary
• Final Report: LSAC Skills Analysis Law School Task Survey (CT 02-02) - Full Research Report (PDF)

A Formal Characterization of and Some Alternatives to Sympson-Hetter Item-Exposure Control in Computerized Adaptive Testing (CT 02-05)
by Wim J. van der Linden, University of Twente, Enschede, The Netherlands

• A Formal Characterization of and Some Alternatives to Sympson-Hetter Item-Exposure Control in Computerized Adaptive Testing (CT 02-05) - Executive Summary
• A Formal Characterization of and Some Alternatives to Sympson-Hetter Item-Exposure Control in Computerized Adaptive Testing (CT 02-05) - Full Research Report (PDF)

The Impact of Item Parameter Estimation on Computerized Adaptive Testing with Item Cloning (CT 02-06)
by Cees A. W. Glas, University of Twente, Enschede, The Netherlands

• The Impact of Item Parameter Estimation on Computerized Adaptive Testing with Item Cloning (CT 02-06) - Executive Summary
• The Impact of Item Parameter Estimation on Computerized Adaptive Testing with Item Cloning (CT 02-06) - Full Research Report (PDF)

Investigating the Quality of Items in CAT Using Nonparametric IRT (CT 04-05)
by Rob R. Meijer, University of Twente, Enschede, The Netherlands

• Investigating the Quality of Items in CAT Using Nonparametric IRT (CT 04-05) - Executive Summary
• Investigating the Quality of Items in CAT Using Nonparametric IRT (CT 04-05) - Full Research Report (PDF)

A Method for Determining the Maximum Number of Nonoverlapping Linear Test Forms That Can Be Assembled From an Item Pool (CT 03-04)
by Ronald Armstrong, Rutgers Business School, Newark/New Brunswick, Rutgers University; and Dmitry Belov, Law School Admission Council

• A Method for Determining the Maximum Number of Nonoverlapping Linear Test Forms That Can Be Assembled From an Item Pool (CT 03-04) - Executive Summary
• A Method for Determining the Maximum Number of Nonoverlapping Linear Test Forms That Can Be Assembled From an Item Pool (CT 03-04) - Full Research Report (PDF)

A Method to Determine Targets for Multi-Stage Adaptive Tests (CT 02-07)
by Ronald Armstrong, Rutgers University; and Louis Roussos, University of Illinois at Urbana-Champaign

• A Method to Determine Targets for Multi-Stage Adaptive Tests (CT 02-07) - Executive Summary
• A Method to Determine Targets for Multi-Stage Adaptive Tests (CT 02-07) - Full Research Report (PDF)

Modeling Nonignorable Missing Data Processes in Item Calibration (CT 04-07)
by Cees A. W. Glas and Jonald L. Pimentel, University of Twente, Enschede, The Netherlands

• Modeling Nonignorable Missing Data Processes in Item Calibration (CT 04-07) - Executive Summary
• Modeling Nonignorable Missing Data Processes in Item Calibration (CT 04-07) - Full Research Report (PDF)

Normal Models for Response Times on Test Items (CT 04-08)
by Wim J. van der Linden, University of Twente, Enschede, The Netherlands

• Normal Models for Response Times on Test Items (CT 04-08) - Executive Summary
• Normal Models for Response Times on Test Items (CT 04-08) - Full Research Report (PDF)

Robustness of Person-Fit Decisions in Computerized Adaptive Testing (CT 04-06)
by Rob R. Meijer, University of Twente, Enschede, The Netherlands

• Robustness of Person-Fit Decisions in Computerized Adaptive Testing (CT 04-06) - Executive Summary
• Robustness of Person-Fit Decisions in Computerized Adaptive Testing (CT 04-06) - Full Research Report (PDF)

Routing Rules for Multiple-Form Structures (CT 02-08)
by Ronald D. Armstrong, Rutgers Business School, Rutgers University

• Routing Rules for Multiple-Form Structures (CT 02-08) - Executive Summary
• Routing Rules for Multiple-Form Structures (CT 02-08) - Full Research Report (PDF)

Survey and Usability Testing Results of the Analytical Reasoning Computerized Prototype at the 2000 Law School Recruitment Forums (CT 02-01)
by Kimberly A. Swygert, Susan P. Dalessandro, and Mike Contreras

• Survey and Usability Testing Results of the Analytical Reasoning Computerized Prototype at the 2000 Law School Recruitment Forums (CT 02-01) - Executive Summary
• Survey and Usability Testing Results of the Analytical Reasoning Computerized Prototype at the 2000 Law School Recruitment Forums (CT 02-01) - Full Research Report (PDF)

Using Patterns of Summed Scores in Paper-and-Pencil Tests and CAT to Detect Misfitting Item Score Patterns (CT 02-04)
by Rob R. Meijer, University of Twente, Enschede, The Netherlands

• Using Patterns of Summed Scores in Paper-and-Pencil Tests and CAT to Detect Misfitting Item Score Patterns (CT 02-04) - Executive Summary
• Using Patterns of Summed Scores in Paper-and-Pencil Tests and CAT to Detect Misfitting Item Score Patterns (CT 02-04) - Full Research Report (PDF)

Violations of Ignorability in Computerized Adaptive Testing (CT 04-04)
by Cees A. W. Glas, University of Twente, Enschede, The Netherlands

• Violations of Ignorability in Computerized Adaptive Testing (CT 04-04) - Executive Summary
• Violations of Ignorability in Computerized Adaptive Testing (CT 04-04) - Full Research Report (PDF)

Archived Computerized Testing Reports

LSAC has archived all Computerized Testing Reports that were published ten or more years ago. These reports are still available upon request.

• View Archived Computerized Testing Reports (PDF)