I.E.R. Girls Assembly Test: Revised norms based on short form

Abstract

Using approximately 900 test scores of applicants at the Vocational Adjustment Bureau and New York City school pupils, it was found that there was a correlation coefficient of close to zero between chronological age and G.M.A. (girls' mechanical assembly test) score, while a coefficient of approximately .40 resulted when G.M.A. scores were correlated with intelligence (either MA or IQ). On this basis the authors conclude that norms for the test should be based on MA rather than CA, and present them in this form. Decile norms for the short form are given for mental ages from 8 to 16. (PsycInfo Database Record (c) 2025 APA, all rights reserved)