CLUSTER ANALYSIS AND THE SEARCH FOR STRUCTURE UNDERLYING INDIVIDUAL DIFFERENCES IN PSYCHOLOGIC PHENOMENA.
ILLINOIS UNIV URBANA DEPT OF PSYCHOLOGY
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In the discussion of the relations of investigations of structure underlying individual differences in psychological phenomena to cluster analysis, emphasis was placed on the importance of clustering according to similarity of within-individual relations between variables such as the relation of values of a dependent variable to values to a manipulated independent variable. A method of analysis is described which is a generalization of the Tucker-Messick method for investigation of individual differences in multidimensional scaling. This generalized procedure is applicable to a variety of types of relations between a dependent variable and given independent variables. The possible application of the results from studies using the method to clustering of individuals according to similarity of relation of the dependent variables to the independent variable is described. An appendix is included which contains a FASTRAN program to perform computations involved in the analysis for individual differences. Author