The determinants of leadership role occupancy: Genetic and personality factors

This study investigated the influence of genetic factor and personality on leadership role occupancy among a sample of male twins. Identical twins ( n = 238) who share 100% of their genetic background were compared with fraternal twins ( n = 188) who are expected to share only 50% of their genetic background. Results indicated that 30% of the variance in leadership role occupancy could be accounted for by genetic factor, while non-shared (or non-common) environmental factor accounted for the remaining variance in leadership role occupancy. Genetic influences also contributed to personality variables known to be associated with leadership (i.e., social potency and achievement). Furthermore, the results indicated that the genetic influence on leadership role occupancy was associated with the genetic factors influencing the personality variables, but there was no definitive evidence whether these personality variables partially mediated the relationship between genetic factor and leadership. Results are discussed in terms of the implications for leader selection and training.