1. Introduction The Thurstone Test of Mental Alertness (TMA) is a standardized psychological assessment designed to measure an individual’s general mental agility and ability to think quickly and accurately. Developed by Dr. Thelma Gwinn Thurstone and her husband Dr. L. L. Thurstone (pioneers in psychometrics and factor analysis), the test is widely used in industrial, organizational, educational, and military settings to predict success in roles requiring rapid information processing, reasoning, and adaptability.