A Longitudinal Study of the Leadership Development Process: Individual Differences Predicting Leader Effectiveness

This study tracked the leadership development of 236 male cadets from matriculation through graduation at a military college. Cognitive ability, physical fitness, prior influence experiences, and self-esteem measured in Year I were relevant to predicting those who assumed formal leadership positions in Year 4. Physical fitness and prior influence experiences measured when cadets entered the college predicted leader effectiveness rated in their fourth year. Stress tolerance and moral reasoning levels did not predict leader emergence or effectiveness, though the set of individual difference measures significantly predicted emergence and effectiveness. Physical fitness levels and moral reasoning increased over time for all cadets, though surprisingly, levels of self-esteem and stress tolerance did not increase over time. Overall the study demonstrated that leadership effectiveness and emergence could be predicted from early measures of individual differences.