. (1975). An empirical comparison of two-stage and pyramidal ability testing (Research Report 75-1). Minneapolis: University of Minnesota, Department of Psychology, Psychometric Methods Program.
la75-01.pdf (1.73 MB). (1974). An empirical investigation of computer-administered pyramidal ability testing (Research Report 74-3). Minneapolis: University of Minnesota, Department of Psychology, Psychometric Methods Program.
la74-03.pdf (2.97 MB)