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論文中文名稱:企業以XBRL格式申報財務資訊與降低資訊不對稱之研究:以台灣上市公司為例 [以論文名稱查詢館藏系統]
論文英文名稱:A Study on XBRL adoption to reduce information asymmetry : Evidence from Taiwan Listed Companies [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:管理學院
系所名稱:經營管理系碩士班
畢業學年度:100
出版年度:101
中文姓名:蔣世軒
英文姓名:Shih-Hsuan Chiang
研究生學號:99578014
學位類別:碩士
語文別:中文
口試日期:2012-06-11
論文頁數:61
指導教授中文名:林鳳儀
指導教授英文名:Fengyi Lin
口試委員中文名:吳斯偉;葉金成;黃俊閎
口試委員英文名:Shih wei Wu;Chin-chen Yeh;Chun-Hung Huang
中文關鍵詞:XBRL資訊不對稱買賣價差股票週轉率盈餘波動性
英文關鍵詞:XBRLInformation asymmetryBid-ask spreadTurnover rateStock Return volatility
論文中文摘要:近年來,XBRL與IFRS逐漸成為會計實務及國際資本市場上備受關注的議題。在採用XBRL的架構下,讓財務資訊的使用者皆能以相同的財務報表格式來進行財務報表的轉換及分析,並且台灣在導入IFRS之後,國際會計準則委員會也會發展出符合IFRS國際會計準則規範的XBRL的分類標準,因此,使各個企業依照IFRS所提出的XBRL分類標準來申報及揭露公司的各項財務資訊。本研究著重於觀察採用XBRL是否得以降低資訊不對稱之現象。在過去的文獻中,學者曾以買賣價差作為資訊不對稱的代理變數來研究XBRL的採用是否能降低韓國股票市場資訊不對稱的程度。因此,本研究著重於探討台灣資本市場上資訊不對稱的情況,除了以買賣價差作為資訊不對稱現象的代理變數外,亦使用股票週轉率及盈餘波動性兩個代理變數作為衡量資訊不對稱的程度。
本研究之實證結果顯示XBRL的採用與否,與資訊不對稱的代理變數間兩者存在著顯著的相關性,且在台灣的資本市場中,採用XBRL是可以降低資訊不對稱的程度。因此,政府應該要對於每一家公司的企業個體報導上,推廣XBRL的採用,更甚至必須強制每一家上市公司皆須導入XBRL,讓財務資訊的使用者了解XBRL所帶來的效益。
論文英文摘要:In recent years, XBRL and IFRS are becoming major concerns in the accounting practices and international capital markets. By adopting the XBRL framework, financial statement users can easily utilize the same format to converse and analyze of financial statements, Furthermore, International Accounting Standards Board has developed XBRL taxonomy of the international accounting standards for IFRS adoption, let each enterprises disclose any financial information according to the XBRL taxonomy that IFRS provides.This study focuses on whether XBRL can effectively reduce information asymmetry. This study focuses on information asymmetry of Taiwan stock market, we include bid-ask spread, stock turnover rate, and earnings volatility as a proxy for examining the degree of information asymmetry.
The results show that the adoption of XBRL has significant correlation with the proxy for information asymmetry and can effectively reduce the degree of information asymmetry in Taiwan market. Therefore, the Government should encourage listed companies to adopt XBRL,so as to enhance capital market efficiency.
論文目次:目錄
中文摘要 I
ABSTRACT II
目錄 V
表目錄 VII
圖目錄 VIII
壹.緒論 1
1.1 研究背景及動機 1
1.2研究目的 4
1.3 研究流程 5
貳、文獻回顧 7
2.1企業資訊揭露與資訊不對稱 7
2.2 XBRL的架構簡介 8
2.3 XBRL之導入計畫 10
2.3.1、背景說明 10
2.3.2、全球各國之XBRL應用現況 11
2.4研究假設 16
參、研究方法 19
3.1 研究變數 19
3.1.1 資訊不對稱之代理變數 19
3.1.2 XBRL二元變數 22
3.1.3影響資訊不對稱之相關變數 23
3.2 研究樣本 25
肆、實證結果 28
4.1 敘述性統計 28
4.2 相關係數分析 29
4.3 XBRL與資訊不對稱之關聯性 31
4.3.1 XBRL二元變數與資訊不對稱代理變數 31
4.3.2 .影響資訊不對稱之相關變數 32
4.4額外測試 36
4.4.1 各產業之分析及比較 37
4.4.2 家族控制企業與非家族控制企業之分析及比較 39
4.4.3 電子產業與非電子產業之分析及比較 43
伍.結論與建議 51
5.1 研究結論 51
5.2 研究建議 53
參考文獻 54

表目錄
表1.1 XBRL在國際資本市場應用現況 14
表3.1 樣本觀察值之產業分布 27
表4.1 敘述性統計 29
表4.2 相關係數分析 30
表4.3 多元迴歸分析 34
表4.4 週轉率模型之迴歸分析(控制盈餘波動性後) 36
表4.5 各產業採用XBRL後減緩資訊不對稱之效果 39
表4.6 家族企業採用XBRL減緩資訊不對稱之效果 41
表4.7 非家族企業採用XBRL減緩資訊不對稱之效果 42
表4.8 電子產業採用XBRL減緩資訊不對稱之效果 44
表4.9 電子業減緩資訊不對稱之效果(買賣價差) 46
表5.0 電子業減緩資訊不對稱之效果(週轉率) 47
表5.1 電子業減緩資訊不對稱之效果(盈餘波動性) 48
表5.2 非電子產業採用XBRL減緩資訊不對稱之效果 49

圖目錄
圖1-1 研究架構 6
圖1-2 XBRL支術架構圖 9
圖1-3 台灣開放式報告分類標準架構圖 13
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