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Ip, Edward Hak-Sing; Chen, Shyh-Huei – Applied Psychological Measurement, 2012
The problem of fitting unidimensional item-response models to potentially multidimensional data has been extensively studied. The focus of this article is on response data that contains a major dimension of interest but that may also contain minor nuisance dimensions. Because fitting a unidimensional model to multidimensional data results in…
Descriptors: Measurement, Item Response Theory, Scores, Computation
Young, John W.; Cline, Fred – Educational Testing Service, 2009
"High Schools That Work" (HSTW) is a school improvement initiative that was inaugurated by the Southern Regional Education Board (SREB) in 1987. The main purpose of this concurrent validity study is to evaluate one or more measures by investigating their relationship to other commonly used and established measures given at or about the…
Descriptors: Validity, Educational Improvement, Improvement Programs, High Schools