AbstractGet full access to this articleView all access options for this article.Get accessReferences1. McNemar, Q. Psychological Statistics. New York: Wiley, 1949 .2. Seashore, R. H. , Dudek, F. J. and Holtzman, W. "A Factorial Analysis of Arm-Hand Precision Tests." Journal of Applied Psychology, XXXIII (1949), 579-584.