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Peer reviewedNandakumar, Ratna – Journal of Educational Measurement, 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.…
Descriptors: Ability, Achievement Tests, Computer Simulation, Equations (Mathematics)
