title: Multiple Group Factor Analysis of Multitrait-Multimethod Matrices.
abstract: Jackson (1975) suggested a two step procedure for analysis of multitrait-multimethod matrices: (1) The trait measures within each method are transformed into principal components, which are then rotated to maximize the correlations with the original trait measures; (2) A principal components analysis is applied to the intercorrelation matrix of these variables. A third step, suggested here, transforms the solution to a classical multiple group factor analysis. A reanalysis of two numerical illustrations shows that the classical procedure yields similar results.
authors.forename: J
authors.initials: J
authors.lastname: Levin