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  • 學位論文

會計師年齡、會計師任期及非審計服務與審計品質關聯性之研究

A Study of the Association among Auditors’ Age, Auditor Tenure, Nonaudit Services and Audit Quality

指導教授 : 劉若蘭

摘要


基於以往審計領域的研究中,對於會計師任期與審計品質之關係、會計師年齡與審計品質之關係,以及非審計服務與審計品質之關係,並未獲得一致之結論。因此,是否有其他的中介變數或調節變數,影響了會計師任期或非審計服務與審計品質關係之效果,本研究擬從會計師年齡變項,延伸探討會計師任期或非審計服務與審計品質之關係是否會受到會計師年齡的中介效果影響。實證結果發現會計師任期及會計師年齡皆與裁決性應計數絕對值呈顯著負相關,顯示任期越長、年齡越大之會計師對於提升審計品質具有正面效果。根據Baron and Kenny. (1986)所提出中介變數檢驗方式,結果發現會計師年齡在會計師任期與裁決性應計數絕對值關係中存在中介效果,顯示會計師年齡於會計師任期與審計品質間之關係扮演重要的中介角色。最後,以往關於盈餘管理之研究,大多學者皆以裁決性應計數衡量管理階層操縱盈餘程度,根據Roychowdhury (2006)將盈餘管理之方式分為應計項目盈餘管理及實質盈餘管理,因此本研究以異常裁決性費用、異常生產成本及異常營運活動現金流量作為實質盈餘管理之代理變數重新探討前述議題。研究結果發現會計師年齡及會計師任期皆與實質盈餘管理之代理變數呈顯著負相關,顯示年齡越大及任期越長之會計師能夠抑制管理階層採用實質盈餘管理方式操縱盈餘,且會計師年齡在會計師任期與實質盈餘管理代理變數關係中亦存在中介效果。

並列摘要


Previous auditing research in the literature have yet to establish a consistent conclusion on how auditor tenure, auditors’ age and non-audit service are each related to audit quality. Therefore, a primary focus of this study is to determine whether there are other mediator or moderator variables influencing the effects of auditor tenure and non-audit services on auditing quality. Utilizing auditor age as the main variable, our study intends to explore how the relationships between auditor tenure and non-audit services to audit quality are affected by the mediating effects of auditors’ age. Empirical results reveal that auditor tenure and auditors’ age are both negatively correlated with the absolute value of discretionary accruals, which indicates that older auditors with longer tenures will have a positive effect on enhancing auditing quality. By applying the mediator variable inspection method proposed by Baron and Kenny (1986), our results show that auditors’ age does indeed exert a mediating effect on the relationship between auditor tenure and the absolute value of discretionary accruals. This suggests that auditors’ age play an important role as an intermediary in the relationship between auditor tenure and audit quality. Since our study found no evidence that the provision of major non-auditing services to audit clients affects audit quality, a mediator effect due to auditor age cannot be demonstrated between non-auditing services and audit quality. Finally, the aforementioned conclusions are also obtained after assessment of audit quality based on past levels of real earnings management.

參考文獻


王泰昌、曾怡潔與劉嘉雯,2008,「資訊不對稱下會計師任期與審計品質之均衡分析」,中山管理評論,第16卷第4期:631-670。
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杜宇琁,2012,「會計師年齡、會計師任期與盈餘管理關聯性之研究」,國立臺中科技大學會計資訊系會計與財稅碩士班碩士論文。
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馬君梅與謝永明,2007,「事務所內自發性會計師更換對公司盈餘品質之影響」,東吳經濟商學學報,第56期:79-105。

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