A study done with 45 individuals in the West Georgia College Summer opportunities Program for Gifted Students compared several intelligence tests. (Tyler-Wood & Carri, 1991) The participants had taken four battery tests which included the Stanford-Binet (LM), Stanford-Binet Fourth Edition, the Otis-Lennon School Abilities Test, and the Cognitive Abilities Test. It is found that scores on the Otis-Lennon School Abilities Test were significantly lower than the Students’ scores on the Stanford-Binet(LM) and the Stanford-Binet Fourth Edition.
“This study indicates the tests of cognitive ability may be tapping different types of information. If the identification for a program for the gifted is based primarily on a single test, the population of gifted students identified will vary greatly depending upon which test is used.” (Tyler-Wood & Carri, 1991)