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ERIC Number: ED435618
Record Type: Non-Journal
Publication Date: 1999-Apr-22
Pages: 29
Abstractor: N/A
Reference Count: N/A
Usefulness of the Logistic Positive Exponent Family of Models in Educational Measurement.
Samejima, Fumiko
The logistic positive exponent family (LPEF) of models has been proposed by F. Samejima (1998) for dichotomous responses. This family of models is characterized by point-asymmetric item characteristic curves (ICCs). This paper introduces the LPEF family, and discusses its usefulness in educational measurement and the implications of its use. Equations are given for the LPEF model. Two contrasting applications of the LPEF are discussed. One is an application in cognitive ability measurement for a situation in which the same task is assigned to two or more groups of individuals that differ in ability levels. With the LPEF, procedures of evaluation in each examination can be adjusted to suit each group. The other application is in personality or attitude measurement. Because models in the LPEF family are three-parameter models, it is advisable to use a nonparametric method to estimate the ICCs and then parameterize each of the resulting ICCs. (SLD)
Publication Type: Reports - Evaluative; Speeches/Meeting Papers
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A