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大型會計師事務所之審計品質真的比非大型會計師事務所好嗎?從抑制盈餘管理的角度探討-控制自我選擇偏誤的重要性

Is the Audit Quality of Big4 Better than Non-Big4? Evidence from Ability of CPA Firm to Restrict Earnings Management-The Importance of Controlling Self-Selection Bias

Abstracts


本研究以會計師事務所抑制裁決性應計數的能力作為審計品質之衡量指標,在控制自我選擇偏誤的情況下,探討安隆案後,臺灣四大會計師事務所的審計品質是否明顯優於非四大會計師事務所。實證證據顯示,樣本資料的確有自我選擇偏誤的現象,以內生性二元處理模型(endogenous binary treatment model)並輔以多種估計方法及固定效果迴歸模型,分離自我選擇效果後,四大會計師事務所相較於非四大會計師事務所更能抑制管理階層盈餘管理的空間;亦即從抑制公司盈餘管理的角度,四大會計師事務所的審計品質明顯優於非四大會計師事務所。此外,臺灣四大會計師事務所間儘管規模差異不小,但其間之審計品質並沒有明顯的差距。最後,證據也顯示,如像過去文獻一樣,若未控制自我選擇偏誤的問題,則檢測結果相當分歧,無法作出穩健的結論,本研究突顯相關議題之探討,對自我選擇偏誤控制的重要性。

Parallel abstracts


Using abnormal accruals as proxies for audit quality, this study examines whether the audit quality of Big 4 firms is superior to that of non-Big 4 firms in Taiwan after Enron's accounting scandals. Empirical evidence suggests that client characteristics can confound inferences of the Big4 effect. Therefore, we employ an endogenous binary treatment model and a fixed effects regression model to control different client characteristics between the two auditor groups, and estimate the audit quality effects. The empirical results of these models show that Big 4 firms deliver higher audit quality than non-Big4 firms. In addition, the audit quality between Big 4 firms is homogenous even though the size of Big 4 firms is quite different in Taiwan. However, these findings become unclear under traditional OLS regression. The results indicate that control of self-selection bias is crucial in such audit empirical research.

References


Hsieh, Yung-Ming、Huang, Chuan(2009)。The association between audit firm tenure and earnings management: Evidence from the self-selection model。Soochow Journal of Accounting。2(1),73-99。
Shiue, Min-Jeng、Chang, Yu-Shan、Kao, Chun-Tzu(2008)。Self-selection of auditors and audit fees。Journal of Contemporary Accounting。9(2),167-200。
Jiang, Jia-Xun、Yang, Ya-Wen(2005)。The effects of audit firms' industry specialization and auditor tenure on earnings quality。Journal of Contemporary Accounting。6(1),23-60。
Liu, Chia-Wen、Wang, Tay-Chang(2008)。Auditor tenure and audit quality。Management Review。27(4),1-28。
Lee, Jan-Zan、Lin, Hsiu-Feng(2005)。The relation between auditor tenure and abnormal accruals。Management Review。24(4),103-126。

Cited by


黃洚函(2015)。董事會多樣性與審計品質之關聯性研究-以中國為例〔碩士論文,淡江大學〕。華藝線上圖書館。https://doi.org/10.6846/TKU.2015.00775
陳怡潔(2017)。董事會結構對醫療財團法人財務操縱之影響〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu201700365
陳仁易(2015)。審計品質對公司績效與資金成本關聯性之探討:針對台灣上市櫃公司〔碩士論文,國立臺中科技大學〕。華藝線上圖書館。https://doi.org/10.6826/NUTC.2015.00077
Gao, W. J. (2018). 不同公司治理模式下台灣上市櫃公司之盈餘管理、關係人交易與潛在舞弊的比較 [master's thesis, National Taiwan University]. Airiti Library. https://doi.org/10.6342/NTU201800349
呂岱芸(2015)。審計委員會成員與CEO間社群連結對盈餘管理之影響〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2015.02449

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