This paper describes a program for summing the scores of test scales (or items). The usual assumptions of either unidimensionality of orthogonality among scales are relaxed. Scale scores are considered to be distance vectors, the sums of which are resultant vectors. The program uses the inter-scale correlation matrix to define the relative directions of the scale-score vectors. Output consists of the magnitude of the resultant vector and its direction with respect to the scale-score vectors.
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References
1.
Cronbach, L. J. and Gleser, G. C.Assessing similarity between profiles. Psychological Bulletin, 1953, 50, 456-473.
2.
Culbert, S. A. and McDonough, J. J.The invisible war: Pursuing self-interests at work. New York: Wiley, 1980.
3.
Gleser, G. C.Quantifying similarity between people . Public Health Service Publication, 1968, 45:932 (1584), 201-212.
4.
Helwig, J. T. and Council, K. A. (Eds.). SAS user's guide, 1979 edition.Raleigh, NC: SAS Institute, 1979.
5.
Krug, S. E.Interpreting 16PF profile patterns. Champaign, IL: Institute for Personality and Ability Testing, 1981.
6.
Lanyon, R. I.A handbook of MMPI profiles. Minneapolis: University of Minnesota Press, 1968.
7.
Osgood, C. E. and Suci, G. J.A measure of relation determined both by mean difference and profile information. Psychological Bulletin, 1952, 49, 251-262.
8.
Overall, J. E.Note on multivariate methods for profile analysis . Psychological Bulletin, 1964, 61, 195-198.
9.
Shaw, M. E. and Wright, J. M.Scales for the measurement of attitudes. New York: McGraw-Hill, 1967.
10.
Skinner, H. A.Differentiating the contribution of elevation, scatter and shape in profile similarity . EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT, 1978, 38, 297-308.
