Comparison of the 1960 and 1972 revisions of the Stanford Binet LM

Comparison of the 1960 and 1972 revisions of the Stanford Binet LM shows mean differences of approximately 10 points in favor of the 1960 norms for ages 2-5. This difference declines to 1-3 points in the 8-to 12-year range. From ages 13 to 18 the discrepancy steadily increases again to a maximum of 9 points at age 18. Separate analyses for three levels of IQ (80, 100, 120) show similar results except for the 13-to 18-year range, where larger discrepancies are associated with higher levels of IQ. Although the 1972 revision represents a definite improvement over the earlier form, the 1972 restandardization procedures reveal notable deficiencies which cause it to compare unfavorably with the McCarthy Scales and the WISC as measures of intellectual functioning in young children.