Managerial behavioral biases are receiving growing attention in corporate finance. Recent theories have illuminated how biases like overconfidence and optimism can affect various corporate decisions (e.g. Manove and Padilla, 1999; Bernardo and Welch, 2001; Heaton, 2002; Van den Steen, 2004; Coval and Thakor, 2005; and Goel and Thakor, 2008).
There is also a nascent empirical literature that has exposed interesting evidence of the effects of managerial behavioral biases. Malmendier and Tate (2005) find that overconfident CEOs invest more aggressively, and Malmendier and Tate (2008) show that overconfident CEOs are more likely to engage in value-destroying mergers. Ben-David, Graham and Harvey (2007) find that firms with overconfident CFOs maintain higher debt ratios and are less likely to pay dividends or repurchase shares. Puri and Robinson (2007) document that optimistic individuals exhibit systematically different choices compared to others, such as holding less diversified portfolios. Graham, Harvey, and Puri (2007) find evidence consistent with the view that optimistic CEOs expect better future performance.