Longitudinal Scalogram Analysis

A Methodology and Microcomputer Program for Guttman Scale Analysis of Longitudinal Data

by Ron D. Hays, Phyllis L. Ellickson


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Guttman scalogram analysis has been limited to cross-sectional analysis. Longitudinal scalogram analysis (LSA), a direct extension of cross-sectional scalogram analysis to longitudinal data, is proposed as an alternative methodology. This Note discusses the benefits of LSA relative to cross-sectional methods of analysis.

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