Dimensions of Picture Identification Test Need Associations

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Abstract
To find a simple and more general structure for need association matrices obtained from Picture Identification Test (PIT) results, PIT need association matrices of eight college student groups were analyzed by INDSCAL, a multidimensional scaling technique. A common three dimensional structure was found. Based on the scale locations of the 22 needs, the dimensions were labeled the Combative, the Personal, and the Competitive dimensions. The INDSCAL model was used as a target for six other comparison groups including male and female English college students, male addicts and controls, and male delinquents and controls. There was enough similarity between the dimensional structure of the need associations of the comparison and target groups to assume that all groups shared the same basic structure of need associations. There were enough differences, however, to suggest that personality characteristics of groups may be related to deviations in the associative structure of their motivation systems. Applications of the techniques to clinical and personality evaluations of groups and individuals were discussed.