How fair is the culture I.Q. test?

If a measure of intelligence is culturally biased it is assumed that disadvantaged individuals will score lower on it than on a less biased instrument. The Cattell purports to be "culture fair" and it was compared to the WISC with a delinquent juvenile population, controlling for both order effects and individual administration. The results reveal consistently lower mean I.Q. scores for the Cattell under all conditions. The Cattell appears to be a more difficult test for this population. It is concluded that considerable caution should be exercised inusing the Cattell as a culture fair method of I.Q. evaluation with underprivileged delinquent youth.