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ERIC Number: EJ920205
Record Type: Journal
Publication Date: 2011
Pages: 4
Abstractor: ERIC
Reference Count: 7
ISSN: ISSN-1536-6367
The Emperor's New Measurement Model
Scholten, Annemarie Zand; Maris, Gunter; Borsboom, Denny
Measurement: Interdisciplinary Research and Perspectives, v9 n1 p32-35 2011
In his opening statements, Humphry takes a critical attitude with respect to psychometric modeling. As he advances and discusses Michell's well-known criticisms, the reader is certain that this paper must have something on offer that deviates considerably from conventional psychometrics. After all "most psychometricians have either explicitly or implicitly adopted Stevens' (1946) definition of measurement" and this paper is surely of a different nature. Humphry thus generates considerable conceptual suspense and high expectations. So what is the actual content of Humphry's article? Does it provide with a revolutionary take on psychometrics? Does it tackle Michell's criticisms or even begin to address them? Hardly so. In this commentary, the authors highlight two serious problems of Humphry's presentation. The first is of a statistical nature and the second, of a conceptual nature. First, although, the model is theoretically interesting, it remains to be seen whether the model could ever be estimated and tested because it is not identified. Second, even if the model could be fitted, it faces exactly the same conceptual problems as the Rasch model, on which it is based. It is therefore wholly unclear whether it could even address Michell's criticisms, let alone solve them. (Contains 1 footnote.)
Psychology Press. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site:
Publication Type: Journal Articles; Opinion Papers
Education Level: Adult Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A