The mean
age of leaders across the 40 samples in which age was reported
was 39.04 years (SD 9.72). These studies were conducted
1134 PAUSTIAN-UNDERDAHL, WALKER, AND WOEHR
between 1962 and 2011. Thirty-six of the 99 studies included in
the present meta-analysis were also included in the Eagly et al.
(1995) meta-analysis, representing a 37% overlap.