Traditional Dimensionality versus Essential Dimensionality.

Nandakumar, Ratna

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Peer reviewed

ERIC Number: EJ435184

Record Type: Journal

Publication Date: 1991

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ISSN: ISSN-0022-0655

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Traditional Dimensionality versus Essential Dimensionality.

Nandakumar, Ratna

Journal of Educational Measurement, v28 n2 p99-117 Sum 1991

A statistical method, W. F. Stout's statistical test of essential unidimensionality (1990), for exploring the lack of unidimensionality in test data was studied using Monte Carlo simulations. The statistical procedure is a hypothesis test of whether the essential dimensionality is one or exceeds one, regardless of the traditional dimensionality. (SLD)

Descriptors: Ability, Achievement Tests, Computer Simulation, Equations (Mathematics), Item Response Theory, Mathematical Models, Monte Carlo Methods, Scores

Publication Type: Journal Articles; Reports - Research

Education Level: N/A

Audience: N/A

Language: English

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