Abstract
The study of Bergman and Engelbrektson (1973), who intended to test some hypotheses concerning the factor structure of the Rod-and-frame Test and the Embedded-figures Test, apart from some minor points is criticized mainly because they allow their criterion variables, i.e., rod-and-frame and embedded-figures, to play a role in the construction of the factors from which the variance of the criteria has to be explained. Further main objections are that in the test battery each of the hypothesized factors is represented by three tests only and that Embedded-figures Test is a modification of one of the market tests for the factor which should account for the Embedded-figures Test variance. Some advice is given to improve the procedures.
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