1. Revelle, W.Very simple structure: An alternative criterion for factor analysis. Paper presented at the annual meeting of the Society for Multivariate Experimental Psychology, Colorado Springs, Colorado, November 1977.
2. Kulik, J. A., Revelle, W., & Kulik, C. L. C.Scale construction by hierarchical cluster analysis. Unpublished manuscript, University of Michigan, 1970.
3. Revelle, W., & Rocklin, T.Alternative procedures for estimating the optimal number of interpretable factors. Paper presented at the European meeting of the Psychometric Society, Uppsala, Sweden, 1978.
4. Revelle, W.ICLUST: A program for analyzing the internal structure of tests. Northwestern University Computing Center Document No. 432, 1977.