Subtest scatter is not an indicator of inaccuracy for short-form estimates of IQ.

The range of scaled scores does not provide information about the inaccuracy of estimates of IQ based on short forms of the test. Subtest scatter on a short form of an intelligence test may justify the complete administration for elaborative or clinical reasons. The criteria for reliable and abnormal ranges of scores for estimates based on short forms are calculable and should be examined to evaluate their usefulness.