The 44 items of the Thurstone and Chave scale of attitude toward the church were rescaled both by category judgment and magnitude estimation. All resulting scales correlated very highly. The relation between the category and magnitude estimate scales showed some curvilinearity, but not such as to characterize a “prothetic” scale. Two primary points are discussed: (1) the effect of bipolarity of the dimension scaled and (2) the feasibility of constructing scales by means of magnitude estimation.
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