“…If the standard of measurement were to change, the posttest ratings would reflect this shift in addition to the actual changes in the person's level of functioning. (Rohs & Langone, 1997, p. 51) Given the understanding of leadership is shaped significantly by cognitive reasoning (Komives, Longerbeam, Owen, Mainella, & Osteen, 2006;Day, Harrison, & Halpin, 2009), any shift in cognition could alter the interpretation of items between pretest and posttest violating the assumption of the same standard of measurement and distorting the internalized scale. Numerous concerns arise related to the use of self-reported data (Bowman & Seifert, 2011;Herzog & Bowman, 2011;Porter, 2011).…”