This study investigated the relationships between two personality variables, Machiavellianism (i.e., manipulativeness) and locus of control as well as the combined relationships of these two variables with a third, affective variable, job satisfaction. A sample of 225 public school secondary level administrators were given the Mach IV Scale, the Mach V Scale, the Facet-free Job Satisfaction Questionnaire, the Rotter I-E Scale and a bibliographic personal status questionnaire. The literature reveals that high Machs outperform low Machs When three personal and situational conditions occur. Moreover, Mach orientation correlates with external locus of control and low job satisfaction. All three of the predicted relationships were found to be significantly related as hypothesized. / Ed. D.