Abstract Considerable amount of researches have shown the existence of CEO overconfidence psychology. This paper, setting Ashare listed company’s CEOs in 2007~2008 as the samples, carries out the empirical research over factors that affect CEO overconfidence by using principal component analysis and logistic regression analysis. This study finds that CEOs who has longer tenure in listed companies and severs as chairman of Board of Directors at the same time, tend to be more overconfident; CEOs who works in a listed company which has greater risk are prone to overconfidence; The scale of the Board of Trustees, the ultimate controller and the size of the company’s asset have negative impact on CEOs’ overconfidence; CEOs who server in a company with high leverage ratio tend to be overconfident. However, the personal characteristics of CEOs do not work upon CEOs’ overconfidence. This means that age, gender, education and other personal characteristics are not factors that affect overconfidence.
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