本研究探討過度自信經理人與負債水準的敏感度是否會受到家族企業特性影響。此外，進一步將家族企業的經理人分成由家族CEO與非家族CEO擔任兩類，以釐清在同樣具有過度自信的情況下，其敏感度是受到何種類型CEO影響。以2001至2007年臺灣上市(櫃)公司為樣本，利用三階段最小平方法檢測。實證結果發現：(1)過度自信經理人與負債水準的敏感度為正。(2)過度自信經理人與負債水準的敏感度受到家族企業釋放訊號需求較低且較傾向風險趨避等特性影響，使敏感度降低。(3)過度自信經理人與負債水準的敏感度減少主要是來自於家族CEO所導致；而非家族CEO使得過度自信經理人與負債水準的敏感度增加但不顯著。

This study examines whether family business characteristics would affect the sensitivity between managerial overconfidence and capital structure decisions. Additionally, we further classify family business management as family CEOs and non-family CEOs to distinguish which type of CEOs mainly affect the sensitivity between managerial overconfidence and capital structure decisions. The sample is comprised of Taiwanese firms and OTC companies listed between 2001 and 2007. A three-stage least squares method is applied. The results indicate that (1) the sensitivity between managerial overconfidence and capital structure decisions is positive; (2) the sensitivity between managerial overconfidence and capital structure decisions reduces because the family business tend to be averse to the risk
and the needs of signaling behaviors are relatively low; (3) the reduced sensitivity between managerial overconfidence and capital structure decisions mainly results from the family business with family CEOs. In addition, the sensitivity between managerial overconfidence and capital structure decisions increases insignificantly
for the family business with non-family CEOs.