On the Assessment of Unidimensional Measurement: Internal and External Consistency, and Overall Consistency Criteria
Open Access
- 1 November 1987
- journal article
- research article
- Published by SAGE Publications in Journal of Marketing Research
- Vol. 24 (4), 432-437
- https://doi.org/10.1177/002224378702400412
Abstract
Kumar and Dillon recently presented a conceptual, overall consistency criterion that represents a sufficient condition for consistency. In commenting on their article, the authors (1) clarify the interrelated nature of internal consistency and external consistency, (2) show that the “bogus perfect fit” example is itself “bogus” in that it cannot occur in either theory or practice, (3) underscore that the specific overall consistency criterion formula defined by Kumar and Dillon cannot be applied in practice, whereas the internal consistency and external consistency criteria can, and (4) caution against using within-block factor analyses as recommended by Kumar and Dillon, and instead advocate the use of confirmatory factor analysis with multiple-indicator measurement models for assessing unidimensionality. In an addendum, the authors discuss their position on unidimensionality and its assessment, contrasting it with the Kumar and Dillon position on unidimensionality and consistency.Keywords
This publication has 18 references indexed in Scilit:
- Methodology Review: Assessing Unidimensionality of Tests and ltenlsApplied Psychological Measurement, 1985
- On the Meaning of within-Factor Correlated Measurement ErrorsJournal of Consumer Research, 1984
- Some contributions to efficient statistics in structural models: Specification and estimation of moment structuresPsychometrika, 1983
- The dimensionality of tests and itemsBritish Journal of Mathematical and Statistical Psychology, 1981
- Intraclass Reliability Estimates: Testing Structural AssumptionsEducational and Psychological Measurement, 1974
- METHODS OF REORDERING THE CORRELATION MATRIX TO FACILITATE VISUAL INSPECTION AND PRELIMINARY CLUSTER ANALYSISJournal of Educational Measurement, 1973
- The square root method and multiple group methods of factor analysisPsychometrika, 1954
- Coefficient alpha and the internal structure of testsPsychometrika, 1951
- The role of correlated factors in factor analysisPsychometrika, 1940
- Factor Analysis by Sub-MatricesThe Journal of Psychology, 1938