本篇研究是用台灣2001年至2011年的資料來探討經理人權力和過度自信對公司績效的影響。實證研究發現經理人權力對公司績效有負面影響，而經理人過度自信即便同時考量經理人權力，對公司績效依然有正面影響。過去研究都只單一探討經理人權力或是過度自信對公司績效的影響，而本篇研究同時納入經理人權力和過度自信兩個因子做為研究，對財務學研究帶來新的研究構思。

This study examines the impact of both CEO power and overconfidence on corporate performance by using Taiwan data from 2001 to 2011. The empirical findings show that CEO power has a negative impact to corporate performance while CEO overconfidence has a positive impact to corporate performance even when CEO power is concerned. Since most prior studies only work on either CEO power or CEO overconfidence, this study contributes to the related literature in simultaneously exploring the impact of both.

1.Adams, R.B., Almeida, H. and Ferreira, D. 2005, Powerful CEOs and their impact on corporate performance. Review of Financial Studies, 18, 1403-1432.
2.Anderson, C. A. and Anthony, R. N. 1986, The new corporate directors: insights for board members and executives. New York: John Whiley.
3.Baker, M., Ruback, R. and Wurgler, J. 2007, Behavioral corporate finance: a survey. New York: Elsevier/North Holland.
4.Bebchuk, L., Cremers, M. and Peyer, U. 2008, CEO centrality. Working Paper.
5.Campbell, T. C., Gallmeyer, M. F., Johnson, S. A., Rutherford, J. and Stanley, B. 2011, CEO optimism and forced turnover. Journal of Financial Economics, 101, 695–712.
6.Claessens, S., Djankov S. and Lang L. 2000, Separation of ownership from control of East Asian firms. Journal of Financial Economics, 58, 81-112.
7.Daily, C. M. and Johnson, J. L. 1997, Sources of CEO power and firm financial performance: a longitudinal assessment. Journal of Management, 23, 97- 117.
8.Demsetz, H. and Lehn, K. 1985, The structure of corporate ownership: causes and consequences. Journal of Political Economy, 93, 1155-1177.
9.Deshmukh, S., Goel, A. M. and Howe, K. M. 2009, CEO overconfidence and dividend policy: theory and evidence. Working Paper.
10.Doukas, J. A. and Petmezas, D. 2007, Acquisitions, overconfident managers and self-attribution bias. European Financial Management, 13, 531-577.
11.Fairchild, R. J. 2005, The effect of managerial overconfidence, asymmetric information, and moral hazard on capital structure decisions. The ICFAI Journal of Behavioral Finance, 2, 1-25.
12.Fairchild, R. J. 2009, Managerial overconfidence, moral hazard problems, and excessive life-cycle debt sensitivity. Investment Management and Financial Innovations, 6, 35-42.
13.Fama, E. F. and French, K. R. 1993, Common risk factors in the returns on stocks and bonds. Journal of Financial Economics , 33, 3-56.
14.Fast, N. J., Sivanathan, N., Mayer, N. D. and Galinsky, A. D. 2012, Power and overconfident decision-making. Organizational Behavior and Human Decision Processes, 117, 249-260.
15.Finkelstein, S. 1992, Power in top management teams: dimensions, measurement, and validation. Academy of Management Journal, 35, 505-38.
16.Frankforter, S. A., Berman, S. L. and Jones, T. M. 2000, Boards of directors and shark repellents: assessing the value of an agency theory perspective. Journal of Management Studies, 37, 321–348.
17.Galasso, A. and Simcoe, T. S. 2011, CEO overconfidence and innovation. Management Science, 57, 1469-1484.
18.Gervais, S., Heaton , J. B. and Odean, T. 2003, Overconfidence, investment policy, and executive stock options. Working Paper.
19.Glejser, H. 1969, A new test for heteroskedasticity. Journal of the American Statistical Association, 64, 316-323.
20.Goel, A. M. and Thakor, A. V. 2008, Overconfidence, CEO selection, and corporate governance. Journal of Finance, 63, 2737-2784.
21.Hackbarth, D. 2008, Managerial traits and capital structure decisions. Journal of Financial and Quantitative Analysis, 43, 843-881.
22.Heaton, J. B. 2002, Managerial optimism and corporate finance. Financial Management, 31, 33-45.
23.Hirshleifer, D. A., Teoh, S. H. and Low, A. 2012, Are overconfident CEOs better innovators. Journal of Finance, 67, 1457-1498.
24.Itzhak, B.D., Harvey, C. R. and Graham, J. R. 2007, Managerial overconfidence and corporate policies. Working Paper.
25.Malmendier, U. and Tate, G. A. 2005, CEO overconfidence and corporate investment. Journal of Finance, 60, 2661-2700.
26.Malmendier, U. and Tate, G. A. 2005, Does overconfidence affect corporate investment? CEO overconfidence measure revisited. European Financial Management 11, 649-659.
27.Malmendier, U. and Tate, G. A. 2008, Who makes acquisition? CEO overconfidence and the market’s reaction. Journal of Financial Economics 89, 20-43.
28.Malmendier, U. and Tate, G. A. 2009, Superstar CEOs. The Quarterly Journal of Economics, 124, 1593-1638.
29.Morck, R. K. and Yeung, B. 2003, Agency problems in large family business groups. Entrepreneurship Theory and Practice, 27, 367-382.
30.Oliver, B. R. 2005, The impact of management confidence on capital structure. Working Paper.
31.Pavlik, E.L., Scott, T. W. and Tiessen, P. 1993, Executive compensation: issues and research. Journal of Accounting Literature, 12, 131-189.
32.Shefrin, H. M. 2001, Behavioral Corporate Finance. Journal of Applied Corporate Finance, 14, 113-126.
33.Slothouber, E.IJ.S. 2010, The influence of CEO overconfidence on firm value. Master thesis, Tilburg University.
34.Stoeberl, P. A. and Sherony, B. C. 1985, Board efficiency and effectiveness. New York: McGraw-Hill.
35.Tuggle, C. S., Sirmon, D. G., Reutzel ,C. R. and Bierman, L. 2010, Commanding board of director attention: investigating how organizational performance and CEO duality affect board members' attention to monitoring. Strategic Management Journal, 31, 946-968.