| Abstract: | A short-form intelligence test is commonly "validated" by demonstrating a high correlation between it and the full scale from which it is taken. It has been argued, however, that the correlation between the short form and the full scale is less meaningful than the extent to which they agree in classifying individuals as to intellectual level; the latter depends in part upon the width of the categories in the classification system. A table is provided which shows the theoretical agreement between the short form and the full scale as a function of their correlation and category width. Empirical values from two studies approximate fairly closely the values given in this table. (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
