Some Methods for Respecifying Measurement Models to Obtain Unidimensional Construct Measurement, Journal of Marketing Research
Lack of unidimensionality in structural equation models most often represents misspecification. The authors review the necessary conditions for unidimensional measurement of constructs. Two methods which assist the researcher in measurement model respecification, multiple-groups analysis and similarity coefficients, are presented and an example illustrating the use of these methods is given.
Anderson, James. 1982. Some Methods for Respecifying Measurement Models to Obtain Unidimensional Construct Measurement. Journal of Marketing Research. 19(4): 453-460.