Longitudinal factor analysis
- 196 Downloads
A model is presented for factor analysing scores on a set of psychological tests administered as both pre- and postmeasures in a study of change. The model assumes that the same factors underlie the tests on each occasion, but that factor scores as well as factor loadings may change between occasions. Factors are defined to be orthogonal between as well as within occasions. A two-stage least squares procedure for fitting the model is described, and generally provides a unique rotation solution for the factors on each occasion.
KeywordsFactor Loading Factor Score Correlation Matrice Orthogonal Rotation Testing Occasion
Unable to display preview. Download preview PDF.
- Fleishman, E. A. Factor structure in relation to task difficulty in psychomotor performance.Educational and Psychological Measurement, 1957,17, 522–532.Google Scholar
- Fleishman, E. A. Human abilities and the acquisition of skill. In E. A. Bilodeau (Ed.),Acquisition of skill. New York: Academic Press, 1966. Pp. 147–167.Google Scholar
- Harris, C. W. Canonical factor models for the description of change. In C. W. Harris (Ed.),Problems in measuring change. Madison, Wis.: Univ. Wis. Press, 1963. Pp. 138–155.Google Scholar
- Horst, P.Matrix algebra for social scientists. New York: Holt, Rinehart and Winston, 1963.Google Scholar
- Thurstone, T. G.Manual for the SRA Primary Mental Abilities. Chicago, Ill.: Science Research Associates, 1958.Google Scholar
- Tucker, L. R. Implications of factor analysis of three-way matrices for measurement of change. In C. W. Harris (Ed.),Problems in measuring change. Madison, Wis.: Univ. Wis. Press, 1963. Pp. 122–137.Google Scholar