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| Schnipke, Deborah L. | 6 |
| Pashley, Peter J. | 2 |
| Roussos, Louis A. | 2 |
| Scrams, David J. | 2 |
| Reese, Lynda M. | 1 |
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Download full textSchnipke, Deborah L.; Scrams, David J. – 1999
Speededness refers to the extent to which time limits affect test takers' performance. With regard to the Law School Admission Test (LSAT), speededness is currently measured by calculating the proportion of test takers who do not reach each item on the test. These proportions typically increase slightly toward the end of the test, indicating that…
Descriptors: Admission (School), College Entrance Examinations, Guessing (Tests), Law Schools
Schnipke, Deborah L.; Reese, Lynda M. – 1999
Two-stage and multistage test designs provide a way of roughly adapting item difficulty to test taker ability. This study incorporated testlets (bundles of items) into two-stage and multistage designs, and compared the precision of the ability estimates derived from these designs with those derived from a standard computerized adaptive test (CAT)…
Descriptors: Adaptive Testing, College Entrance Examinations, Computer Assisted Testing, Law Schools
Schnipke, Deborah L.; Roussos, Louis A.; Pashley, Peter J. – 2000
Differential item functioning (DIF) analyses are conducted to investigate how items function in various subgroups. The Mantel-Haenszel (MH) DIF statistic is used at the Law School Admission Council and other testing companies. When item functioning can be well-described in terms of a one- or two-parameter logistic item response theory (IRT) model…
Descriptors: College Entrance Examinations, Comparative Analysis, Item Bias, Item Response Theory
Roussos, Louis A.; Schnipke, Deborah L.; Pashley, Peter J. – 2000
The Mantel-Haenszel (MH) differential item functioning (DIF) parameter for uniform DIF is well defined when item responses follow the two-parameter-logistic (2PPL) item response function (IRF), but not when they follow the three-parameter-logistic (3PL) IRF, the model typically used with multiple choice items. This research report presents a…
Descriptors: College Entrance Examinations, Difficulty Level, Estimation (Mathematics), Item Bias
Schnipke, Deborah L. – 1999
When running out of time on a multiple-choice test such as the Law School Admission Test (LSAT), some test takers are likely to respond rapidly to the remaining unanswered items in an attempt to get some items right by chance. Because these responses will tend to be incorrect, the presence of rapid-guessing behavior could cause these items to…
Descriptors: College Entrance Examinations, Difficulty Level, Estimation (Mathematics), Guessing (Tests)
Schnipke, Deborah L.; Scrams, David J. – 1999
The availability of item response times made possible by computerized testing represents an entirely new type of information about test items. This study explores the issue of how to represent response-time information in item banks. Empirical response-time distribution functions can be fit with statistical distribution functions with known…
Descriptors: Adaptive Testing, Admission (School), Arithmetic, College Entrance Examinations
