We examine whether attribution bias leads managers who have experienced shortterm
forecasting success to become overconfident in their ability to forecast future
earnings. Importantly, this form of overconfidence is endogenous and dynamic. We also
examine the effect of this cognitive bias on the managerial credibility. Consistent with
the existence of dynamic overconfidence, managers who have predicted earnings
accurately in the previous four quarters are less accurate in their subsequent earnings
predictions. These managers also display greater divergence from the analyst consensus
and are more precise. Lastly, investors and analysts react less strongly to forecasts
issued by overconfident managers.