An evaluation of certain intelligence tests

Abstract

Comparisons were made of intelligence quotients on group tests given at two-year intervals in grades 1B, 3B, 5B and 7B. Performance tests such as the Detroit First Grade Intelligence Test and the Pintner-Cunningham Primary Mental Test "yield IQ's from five to eleven points higher than those with which they were compared, and fail to correlate as highly with other tests as do tests involving a larger verbal element." Middle and upper grade tests, such as the Terman Group Test of Mental Ability, the National Intelligence Scales, and the Detroit Primary Intelligence Test correlate highly with each other and yield comparable IQ's. "Early primary intelligence tests of a performance type correlate with middle and upper grade tests .50 to .65; middle and upper grade tests correlate with each other .70 to .87." (PsycInfo Database Record (c) 2025 APA, all rights reserved)