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| Difficulty Level | 1 |
| Equated Scores | 1 |
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| Journal of Applied Measurement | 2 |
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| Schumacker, Randall E. | 1 |
| Sunathong, Surintorn | 1 |
| Wright, Benjamin D. | 1 |
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Peer reviewedCampbell, Suzann K.; Wright, Benjamin D.; Linacre, J. Michael – Journal of Applied Measurement, 2002
Conducted a Rasch analysis of the psychometric qualities of the Test of Infant Motor Performance (TIMP; G. Girolami and S. Campbell, 1994) for the purpose of reducing the length of the test while maintaining its precision as a measurement device. Using scores from 1,732 tests, the TIMP was reduced to 42 items to form a functional motor scale for…
Descriptors: Infants, Measures (Individuals), Motion, Psychometrics
Peer reviewedSunathong, Surintorn; Schumacker, Randall E.; Beyerlein, Michael M. – Journal of Applied Measurement, 2000
Studied five factors that can affect the equating of scores from two tests onto a common score scale through the simulation and equating of 4,860 item data sets. Findings indicate three statistically significant two-way interactions for common item length and test length, item difficulty standard deviation and item distribution type, and item…
Descriptors: Difficulty Level, Equated Scores, Interaction, Item Response Theory
