The strategy of using short tests at the exploratory stages of determining personality factors in young children has one drawback: it leads to difficulties in factor matching unless a rigorous test is used. However, by using what is here defined as the configurative method of matching, the greater number of tests employed in this approach can compensate for their unreliability through brevity. A formula is given for obtaining the correlations among factors from two studies with common variables, to determine the degree of matching.
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