“…This taxonomy was further developed and tested to predict leaders' behaviors (Barbuto & Scholl, 1999;Barbuto, Fritz & Marx, 2000). In two independent research studies examining antecedents of leaders' behaviors (using these two motivation taxonomies), the five sources of motivation (Barbuto & Scholl, 1998;Leonard, Beauvais & Scholl, 1999) were better able to predict behavior than McClelland's (1 985) three-need model (see Barbuto, Fritz & Marx, 2000;2002). These five sources of motivation include intrinsic process, instrumental, selfconcept-external, self-concept-internal, and goal internalization.…”