評〈審計品質與資訊不對稱之關聯性〉

王貞靜、張瑀珊與林凱薰（2010，審計品質與資訊不對稱之關聯性）一文的目的在於分析審計品質與資訊不對稱的關係。作者利用probability of information-based trading（PIN）衡量企業資訊不對稱的程度，並以會計師事務所規模、會計師任期、裁決性應計數與審計市場產業專家作為審計品質的代理變數。研究結果指出審計品質的確能降低企業資訊不對稱的程度。作者認為我國的大型會計師事務所能有效降低資訊不對稱的程度，此代表其具有較高的審計品質。不過，根據我在文中的說明，審計品質與資訊不對稱在理論上的關係並不清楚，要從事實證的分析也有一定的困難，但本文提供了一個起點，可供後續研究者參考。

Wang, Chang and Lin (Audit Quality and Information Asymmetry) study the relations between audit quality and information asymmetry. The use probability of information-based trading (PIN) as a proxy for information asymmetry among market participants and use audit firm size, auditor tenure, discretionary accruals and audit industry specialist as proxies for audit quality. Empirical results show that high quality audit can decrease the degree of information asymmetry. Specifically, it is found that big audit firm is capable of reducing asymmetry level. My discussion raises some concerns about the development of hypotheses and the method of empirical analysis. Still, Wang, Chang and Lin offer a starting point as to how the relations between audit quality and information asymmetry can be explored.