Correlation of the Slosson Intelligence Test with the California Short-Form Test of Mental Maturity and the Shipley-Institute of Living Scale

Abstract

The purposes of the present study were to determine the validity of the Slosson Intelligence Test (SIT) relative to two other group tests of mental ability serving as criterion measures and to ascertain in light of the statistical outcomes whether the SIT can be used as an effective instrument in assessing the intellectual ability of college students. The selection of the criterion instruments—the California Short-Form Test of Mental Maturity and the Shipley-Institute of Living Scale—was based on their reliability and validity as well as on their rather wide usage in educational and institutional settings. The correlation coefficients obtained in this study between the SIT and the criterion instruments that ranged from .68 to .73 were significant beyond the .01 level. In light of these relatively high and significant coefficients, it was concluded that the SIT is a valid measure of intellectual functioning that may be used in a population of college students.