The relative-age effect and career success: Evidence from corporate CEOs

This paper finds that the number of CEOs born in June and July is disproportionately small relative to the number of CEOs born in other months. Our evidence is consistent with the “relative-age effect” due to school admissions grouping together children with age differences up to one year, with children born in June and July disadvantaged throughout life by being younger than their classmates born in other months. Our results suggest that the relative-age effect has a long-lasting influence on career success.