我國目前實施之強制會計師輪調制度，不同於美國的會計師事務所所間輪調，而係採事務所所內定期輪調之方式。故本研究之目的即在探討：(1)我國實施強制會計師所內輪調之公司當年度與前一年度及當年度無須實施會計師輪調之公司，其裁決性應計數(做為管理當局盈餘管理之替代變數)是否有顯著差異，以檢視公司施行輪調制度是否會對公司管理階層所進行之盈餘管理產生影響；(2)實施會計師輪調制度一年後又「自願性」換回輪調前原任會計師之公司，當年度與其前一年度及當年度輪調後未再更換會計師之公司，其裁決性應計數是否有顯著差異，以檢視原會計師回任之情形對公司管理階層在財務報表之盈餘管理是否有所影響。
    實證結果顯示：(1)實施強制會計師輪調之公司當年度裁決性應計數絕對值顯著大於輪調之前，但實施會計師輪調與無須實施輪調之公司其裁決性應計數則無顯著差異，因此輪調制度之實施似乎無法能夠較為有效抑制管理當局之盈餘管理；(2)實施輪調一年後又自願性換回原會計師之公司當年度裁決性應計數絕對值則顯著小於回任之前一年度及當年度實施輪調後會計師未再更換之公司，故公司自願性換回輪調前之原任會計師反而使管理當局之盈餘管理受到較有效地監督與抑制，對於提升財報盈餘品質具有正面助益。

Different from U.S.A., the mandatory rotation requirement in Taiwan is only within the same audit firm. Therefore, the purpose of this study is to examine the effect of mandatory auditor rotation within the same audit firm on corporate earnings management. We examine (1) the significance of differences between absolute discretionary accruals before and after mandatory auditor rotation and between firms that are required to rotate and those not subject to requirements ； (2) the significance of differences between absolute discretionary accruals before and after original auditor resumes (who is rotated one year earlier) and between firms that spontaneous change to original auditor and others remain the same auditor after mandatory rotation.
  Our result indicates that ：(1) the absolute discretionary accruals after mandatory auditor rotation are significantly higher than before mandatory auditor rotation, and we find no significant evidence of absolute discretionary accruals between firms that are required to rotate and those not subject to requirements ；(2) the absolute discretionary accruals after original auditor resume are significantly lower than before original auditor resume and firms remain the same auditor. Therefore, original auditor resumes can lead to improvements on earnings management after mandatory rotation.

第壹章  緒論	                     1
第一節  研究背景	                     1
第二節  研究動機	                     3
第三節  研究目的	                     5
第四節  論文架構	                     6
第五節  研究流程	                     7

第貳章  文獻探討	                     8
第一節  贊成會計師輪調制度之相關文獻	   8
第二節  反對會計師輪調制度之相關文獻	  13
第三節  盈餘管理之相關文獻	           19

第參章  研究方法	                    24
第一節  研究設計	                    24
第二節  研究假說	                    25
第三節  變數定義與實證模型	           28
第四節  研究期間、樣本選取與資料來源	  35

第肆章  實證測試與分析	           38
第一節  樣本敘述統計分析	           38
第二節  單變量檢定分析	           43
第三節  複迴歸分析	                    47
第四節  敏感性分析	                    52

第伍章  研究結論、限制及建議	  54
第一節  研究結論	                    54
第二節  研究限制	                    57
第三節  研究建議	                    57

參考文獻	                             59


表目錄

【表2-1】贊成會計師輪調之文獻彙總表	12
【表2-2】贊成會計師輪調之綜合結論	13
【表2-3】反對會計師輪調之文獻彙總表	18
【表2-4】反對會計師輪調之綜合結論	19
【表2-5】盈餘管理定義之整理	20
【表3-1】變數名稱之定義與說明	34
【表3-2】樣本篩選產業分佈表	36
【表3-2】樣本篩選產業分佈表(續)	37
【表4-1】各項變數之敘述統計	39
【表4-1】各項變數之敘述統計（續）	40
【表4-1】各項變數之敘述統計（續）	41
【表4-2】Pearson相關係數矩陣	42
【表4-3】各項變數之統計檢定	45
【表4-3】各項變數之統計檢定（續）	46
【表4-4】裁決性應計數(DA)之OLS迴歸分析結果	50
【表4-4】裁決性應計數(DA)之OLS迴歸分析結果（續）	51
【表4-5】裁決性應計數(DA)之OLS迴歸分析結果-電子業	52
【表4-5】裁決性應計數(DA)之OLS迴歸分析結果-電子業（續）53

圖目錄

【圖1-1】研究流程圖	7
【圖3-1】研究設計圖	24

一、中文文獻:

李建然、林秀鳳，2005，會計師任期與異常應計數關聯性之研究，管理評論，第二十四卷，第4期，103-126。
李建然、許書偉、陳政芳，2003，非審計服務與異常應計數之關聯性研究，會計評論，第37期，1-30。
馬君梅、謝永明，2004，事務所內會計師輪調對公司盈餘品質之影響，海峽兩岸及東亞地區財經與商學研討會，31-52。
張文瀞，2000，盈餘管理之特性與審計品質之影響，國立政治大學會計研究所博士論文。
張俊賢，2004，強制會計師輪替對審計品質的影響，國立臺北大學會計研究所碩士論文。
戚務君、廖益均、黃惠琦，2004，強制合夥會計師輪調制度與異常應計金額之關聯性之研究，國立政治大學。
溫玉新，2003，會計師更換與審計品質—從應計項目探討，國立臺北大學會計研究所碩士論文。
賴春田，2000，會計師的業務、責任及會計師事務所組織的演變，國立臺灣大學會計研究所碩士論文。
蘇裕惠，2004，會計師輪調制度與盈餘品質，海峽兩岸及東亞地區財經與商學研討會，53-72。

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Carcello, J. V. and A. L. Nagy. 2004. Audit firm tenure and fraudulent financial reporting. Auditing: A Journal of Practice and Theory 23 (2): 55-69.
Chi. W. and H. Huang. 2003. Discretionary Accruals, Audit-Firm Tenure and Auditor Tenure: Evidence from Taiwan. Working paper, National Chengchi University, Taipei, Taiwan.
Chung, Richard, Michael Firth and Jeong-Bon Kim. 2002. Institutional monitoring and opportunistic earnings management, Journal of Corporate Finance 8: 29-48.
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Davis, L. R., B. Soo, and G. Trompeter. 2002. Auditor tenure, auditor independence and earnings management. Working paper, Boston College, Chestnut Hill, MA.
DeAngelo, L. E. 1981. Auditor independence, low balling, and disclosure regulation. Journal of Accounting and Economics 3 (August): 113-127.
DeAngelo, L. E. 1986. Accounting numbers as market valuation substitutes: A study of management buyouts of public stockholders. The Accounting Review 61(July): 400-420.
DeAngelo, H., L. DeAngelo, and D. Skinner . 1994. Accounting choices in troubled companies. Journal of Accounting and Economics 17 (January): 113-143.
Dechow, P. M., R. Sloan and A. Sweeney. 1995. Detecting earnings management. The Accounting Review 70 (April): 193-225.
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Defond, M. L. and J. Jiambalvo. 1994. Debt covenant violation and manipulation of accruals. Journal of Accounting and Economics 17: 145-176.
______, and K. R. Subramanyam. 1998. Auditor changes and discretionary accruals. Journal of Accounting and Economics 25(1): 35-67.
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