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  • 學位論文

非審計服務與審計品質

Nonaudit Service and Audit Quality

指導教授 : 廖益興
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摘要


本研究旨在探討不同類別的非審計服務是否會影響審計品質。由於過去文獻指出,非審計服務的類別與幅度對於審計品質會有不同的影響,因此本研究藉由內部控制專案審查、管理顧問服務與稅務諮詢服務等三類非審計服務的提供檢視是否不同類別的非審計服務對於審計品質會造成不同的影響。在國內,由於審計公費與非審計公費的揭露須達到一定標準,即非審計服務的模型可能具有樣本自我選樣偏誤的問題。因此,本文使用Heckman所提出兩階段修正估計法進行實證測試。 實證結果發現,非審計服務-內部控制專案審查與裁決性應計數幅度呈顯著正相關。進一步區分裁決性應計數的方向,可以發現非審計服務-內部控制專案審查與方向為正之裁決性應計數亦呈顯著正相關,但與方向為負之裁決性應計數則無顯著關係,表示審計人員同時對受查客戶提供非審計服務-內部控制專案審查時,比較可能允許管理階層向上操縱盈餘,而管理顧問服務與稅務諮詢服務等非審計服務對於裁決性應計數之幅度與方向的影響則皆不顯著。此種關係顯示,不同類別的非審計服務對於審計品質會造成不同的影響。

並列摘要


This study aims to examine whether different non-audit services affect audit quality. Prior literature shows that the nature and extent of non-audit services can produce different effects on audit quality. This study therefore examines the variance of audit quality under the provision of three non-audit services: project audits of internal control systems, management consulting services and tax advisory services to investigate their effects. In Taiwan, the disclosure of audit fees and non-audit fees is required to reach a certain standard; that means the samples in non-audit service model may have the self-selection bias problem. Accordingly, this study uses the two-stage Heckman approach. The results show that project audits of internal control systems have a significantly positive relationship with discretionary accruals. Further to distinguish the direction of discretionary accruals, we find that project audits of internal control systems have a significantly positive relationship with positive discretionary accruals, but an insignificant relationship with negative discretionary accruals. The above results indicate that when auditors conduct project audits of internal control systems for clients, they more likely allow management to manipulate earnings upward. For management consulting services and tax advisory services, neither has significant association with discretionary accruals by the range or direction. The results show that different non-audit services result in different effects on audit quality.

並列關鍵字

Non-audit service Audit quality

參考文獻


李建然、許書瑋與陳政芳,2003,非審計服務與異常應計數之關聯性研究,會計評論,37,頁1-30。
李建然與林秀鳳,2005,會計師任期與異常應計數之關聯性研究,管理評論,24(2),頁103-126。
李建然與顏怡音,2005,影響首次公開發行內部控制制度專案審查公費之因素,當代會計,6(1),頁61-88。
林嘉慧,2008,台灣管理顧問業的現況與發展,經濟前瞻,120,頁118-122。
楊炎杰與官月緞,2006,客戶重要性與非審計服務是否影響審計品質?Enron後的觀察,會計評論,43,頁27-61。

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