@inbook {1974, title = {Effects of Knowledge of Results and Varying Proportion Correct on Ability Test Performance and Psychological Variables}, year = {1977}, address = {D. J. Weiss (Ed.), Proceedings of the 1977 Computerized Adaptive Testing Conference. Minneapolis MN: University of Minnesota, Department of Psychology, Psychometric Methods Program.}, author = {Prestwood, J. S.} }