The purpose of licensing and certification tests is to protect the public. This purpose determines test content, difficulty of the items, test format, use of test scores in decision making, and ways of setting standards. Currently being explored are methods to ensure continued competence, and legal considerations related to antidiscrimination…

Examines accuracy evaluation in published testing programs of the following: J. M. Cattell; C. Spearman; A. Binet; L. M. Terman; R. M. Yerkes; E. L. Thorndike; and W. D. Scott. Developing community and consensus on testing required convergence between theorists and practitioners. (SLD)