Men Honestly Overate Their Job Performance More Than Women: Reason For More Male Bosses

From ScienceBlog, "Honest Overconfidence May Lead To Male Domination In The C-Suite:"

A study conducted by Columbia Business School’s Prof. Ernesto Reuben, Assistant Professor, Management, alongside Pedro Rey-Biel, Associate Professor, Autonomous University of Barcelona, Paola Sapienza, Associate Professor, Professor of Finance, Northwestern University, and Luigi Zingales, Robert C. McCormack Professor of Entrepreneurship and Finance, the University of Chicago Booth School of Business, finds men’s honest overconfidence — not overt discrimination — may play an important role in male domination of the C-suite.*** The researchers found that when they compared actual with recalled performance, most participants overestimated their performance — a tendency documented in different forms in different studies. The major difference was that men consistently rated their past performance about 30 percent higher than it really was. Women, on the other hand, consistently rated their past performance only about 15 percent higher than it actually was. [Emphasis Added]

The research study is "The Emergence of Male Leadership in
Competitive Environments" by Ernesto Reubena, Pedro Rey‐Bielb, Paola Sapienzac, and Luigi Zingalesd.