ERIC - Multivariate Analysis of Ipsative Data: Problems and Solutions.
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Published: 12-14-2015 06:31 am
Updated: 12-14-2015 06:40 am
"The term "ipsative" refers to measurement based on intra-individual comparisons. The research literature in the social sciences contains many cautions about using ipsative data in multivariate analysis. The purpose of this paper is to identify the problems associated with the multivariate and regression analyses of ipsative data and to provide recommendations for avoiding these problems. Ipsative scales have been mainly employed by researchers in the area of personality measurement, vocational choice, and the assessment of values and attitudes where the scale values are interrelated..."
"... This study recommends that multivariate or regression analysis should not be performed on data obtained with ipsative measurement. Other alternatives are to use normative rather than ipsative measurement, or to reduce the interrelatedness of the scales by deleting one of the ipsative scales or adding a normative scale."
I wonder why MBTI is using multivariate statistics on an ipsative measurement even though it's unrecommended.