Abstract
The relation of Machiavellianism to the internal-external control personality was examined. Previous research was based on student samples with the instruments administered in a controlled environment. In this study Rotter's I-E and Mach IV scales were administered via mail survey to 71 sales managers employed by three companies. Despite differences in test administration and samples, results reaffirm previous research that high external locus of control is associated with high Machiavellianism scores.