An empirical comparison of two-stage and pyramidal ability testing (Research Report 75-1). Minneapolis: University of Minnesota, Department of Psychology, Psychometric Methods Program.
. (1975). ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)
An empirical investigation of computer-administered pyramidal ability testing (Research Report 74-3). Minneapolis: University of Minnesota, Department of Psychology, Psychometric Methods Program.
. (1974). ![application/pdf PDF icon](/modules/file/icons/application-pdf.png)