本研究旨在探討企業選擇之 ESG 確信機構（其他查驗證單位、四大會計師事務所及非四大會計師事務所）對企業 ESG 績效之影響。再者，本文亦進一步檢視查核會計師權力關係（合法與專家權力）之關聯性。實證結果發現，相較於四大及非四大會計師事務所，委任其他查驗證單位之企業有顯著較高之 ESG 績效，可能原因為我國 ESG 仍存在發展空間。而若深入探討會計師特性，發現專家權力會計師提供確信之企業會有顯著較高之 ESG 分數。此外，實證結果亦顯示，相較於其他查驗證單位，委任四大確信之企業不具顯著盈餘反應係數差異。而與非四大確信之企業則有顯著負向盈餘反應係數差異，顯示資本市場之投資人更信任其他查驗證單位提供之確信服務與資訊。希冀透過本文實證發現，提供企業選擇不同確信服務機構影響 ESG 分數及盈餘反應係數，以及個別會計師特性為影響企業ESG 分數重要影響因素之本土實證證據。

This study aims to explore the impact of the choice of ESG assurance providers (other verification organizations, Big4 accounting firms, and non-Big4 accounting firms) on corporate ESG performance. Furthermore, this paper examines wether the auditors with power relationships (legitimate power and expert power) have different impact. The empirical results show that companies that appoint other verification organizations have significantly higher ESG performance compared to those that appoint Big4 and non-Big4 accounting firms. This may be due to the fact that ESG in Taiwan still has room for development. Additionally, when examining the characteristics of accountants, it is found that companies assured by expert power accountants have significantly higher ESG scores. The empirical results also indicate that compared to other verification organizations, there is no significant difference in the earnings response coefficient for companies that appoint the Big4. However, compared to companies assured by non-Big4 firms, there is a significant negative difference in the earnings response coefficient, indicating that investors in the capital market have more trust in the assurance services and information provided by other verification organizations. Through the empirical findings of this paper, it is hoped to provide local empirical evidence on the impact of choosing different assurance service providers on ESG scores and earnings response coefficients, as well as the significant influence of individual accountant characteristics on corporate ESG scores.

摘要				        I
Abstract	  	               II
目錄				        IV
圖目錄				        VI
表目錄				        VII
第壹章 緒論			        1
第一節 研究背景與動機		        1
第二節 研究目的			        4
第三節 研究架構			         5
第貳章 文獻探討與假說發展		         7
第一節 企業社會責任及 ESG 發展	         7
第二節 永續報告書		         9
第三節 永續報告書確信相關文獻回顧	         12
第四節 權力關係會計師		         14
第五節 盈餘反應係數		         16
第參章 研究方法			         18
第一節 變數定義		    	         18
第二節 實證模型			         23
第三節 樣本與資料來源		         26
第肆章 實證結果與分析		         29
第一節 敘述性統計及差異檢定結果	         29
第二節 相關係數分析		         37
第三節 迴歸結果分析		         44
第四節 其他分析			         51
第四節 敏感性分析		         53
第伍章 研究結果、建議與限制	         58
第一節 研究結論			         58
第二節 研究建議與限制		         59
參考文獻				         60
 

圖目錄
圖 1 研究流程圖	                                                6

表目錄
表 1 TESG 永續發展指標架構                                        18
表 2 樣本篩選表                                                  26
表 3 樣本分佈表                                                  27
表 4 敘述性統計結果                                              31
表 5 差異檢定結果                                                34
表 6 相關係數表                                                  38
表 7 確信機構與企業永續績效之迴歸分析                              46
表 8 權力關係會計師與企業永續績效之迴歸分析                         48
表 9 確信機構、盈餘市值比及未預期盈餘市值比與累積異常報酬之迴歸分析	50
表 10 確信機構及確信提供者之連續任期與企業永續績效之迴歸分析	        51
表 11 確信機構與企業永續績效排名之迴歸分析                       	54
表 12 權力關係會計師與企業永續績效排名之迴歸分析                   	56

中文文獻
孔繁華，2021，查核會計師的合法與專家權力重要嗎？財務風險客戶與審計品質 觀點，管理與系統，第28卷第4期：431-477。
何里仁與江向才，2019，董事連結與企業社會責任報告書之確信，當代會計，20卷第2期：117-172。
吳政諺與葉俐伶，2022，投資等級數據之永續報告書及國內確信執行之觀察，會計研究月刊，第440期：54-58。
李桓伊、紀信義與陳靖樺，2024，環境資訊揭露對投資人盈餘品質認知之影響：兼論經理人股權結構，台大管理論叢：34(1)。
李宜樺、趙永潔與羅唯瑄，2021，永續報告書 ESG 資訊的公信力，會計研究月刊，第422期：82-86。
杜榮瑞、許文馨、鄧雨賢，2017，企業社會責任報告書之確信服務提供者、確信程度及產業專家與可信度之關聯：實驗研究，中華會計學刊，第12卷第S期：503-536。
黃正忠、林泉興與迪佳瑩，2020，綠色金融與氣候 相關財務資訊揭露趨勢，會計研究月刊，第379期：87。
黃啟瑞，2021，ESG 永續報告書與國際規範解析，會計研究月刊，第432期：70-76。
廖益興，單騰笙與蔡元棠，2020，董事連結與確信服務專家對企業社會責任績效之影響，會計評論，第71期：1-39。
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