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By means of pseudorandom procedures factor similarity indices are computed that come close in numerical values to those taken by H. J. Eysenck and associates as sufficient evidence for metric identity of EPQ scales across cultures. It is argued that considerable bias in the results by no means can be ruled out and that intercultural comparison of mean scores obtained on EPQ scales is unwarranted.
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Bijnen et al. (1986) studied this question.
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