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Computer Programs2
Item Analysis2
Reliability2
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Error of Measurement1
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Gustafsson, Jan-Eric1
Porter, D. Thomas1
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The Development of a Computerized System for the Estimation of Reliability for Measurement Systems Employing Interval or Ratio Data.
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Porter, D. Thomas – 1977
Critical to precise quantitative research is reliability estimation. Researchers have limited tools, however, to assess the reliability of evolving instruments. Consequently, cursory assessment is typical and in-depth evaluation is rare. This paper presents a rationale for and description of PIAS, a computerized instrument analysis system. PIAS…
Descriptors: Computer Programs, Item Analysis, Reliability, Statistical Analysis
The Rasch Model for Dichotomous Items: Theory, Applications and a Computer Program. No. 63.
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Gustafsson, Jan-Eric – 1977
The Rasch model for test analysis is described and compared with two-parameter and three-parameter latent-trait models. Conditional maximum likelihood equations for estimating item parameters are derived, and estimates of person parameters are described together with their confidence intervals. Goodness of fit tests are discussed, including a…
Descriptors: Adaptive Testing, Computer Programs, Equated Scores, Error of Measurement