ABSTRACT
Introduction Since the earliest days following its publication, investigators have selected the MMPI item pool as a source for the development of new scales for the measurement of a bewildering array of variables. Hathaway and McKinley’s completion of the series of clinical scales based on pathological criterion groups produced no significant pause in scale development efforts. By the mid-1950s, these efforts had yielded a large number of scales, a plurality of which had been developed by graduates and doctoral advisees from the University of Minnesota, or by their students in turn.
