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研究生:蕭博雍
研究生(外文):Po-Yung Hsiao
論文名稱:自願性資訊揭露、強制性資訊揭露與盈餘管理之關聯研究-班佛法則的運用
論文名稱(外文):A Study of Voluntary Information Disclosure, Mandatory Information Disclosure and Earnings Management-An Application of Benford’s Law
指導教授:歐陽豪歐陽豪引用關係李政隆李政隆引用關係
指導教授(外文):Hou Ou-YangChen-Lung Li
口試委員:李明興
口試委員(外文):Ming-Shing Lee
口試日期:2014-06-04
學位類別:碩士
校院名稱:崑山科技大學
系所名稱:企業管理研究所
學門:商業及管理學門
學類:企業管理學類
論文種類:學術論文
論文出版年:2014
畢業學年度:102
語文別:中文
論文頁數:58
中文關鍵詞:班佛法則盈餘管理自願性資訊揭露強制性資訊揭露
外文關鍵詞:Benford’s LawEarnings ManagementVoluntary Information DisclosureMandatory Information Disclosure
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台灣主管機關近年來積極推動公司治理機制,特別是藉由法規的修訂,鼓勵企業自願性揭露以改善企業的資訊揭露及透明度,從而增強投資大眾對資本市場的信心。但自願性資訊揭露的品質,仍受到相當程度的質疑。因此,本研究的主要目的探討上市(櫃)公司管理當局對月報-自願性資訊揭露與季報與年報-強制性資訊揭露,是否會因揭露方式的不同而影響盈餘管理的幅度,並運用班佛法則以位數分配之實際情形與預期情形的差異,來檢驗不同揭露方式下稅前淨利的數據分配是否有顯著異常之現象。本研究以台灣1988年至2012年之曆年制上市櫃公司之月報資料中的稅前盈餘資料為自願性資訊揭露的代理指標,季報與年報中的稅前盈餘資料為強制性資訊揭露的代理指標,實證結果發現以下結論,一、本研究發現在自願性資訊揭露部分有強烈盈餘管理之現象;二、本研究發現在強制性資訊揭露部分有相當程度的盈餘管理之現象;三、自願性資訊揭露偏離班佛法則的幅度遠大於強制性資訊揭露部分,代表自願性資訊揭露存在較明顯之盈餘管理狀況;四、強制性資訊揭露中,年報資料盈餘管理的程度高於季報。因此建議主管機關未來能針對自願性揭露機制與配套措施加以調整與管理,而強制性資訊揭露亦應投入相當關注,如此將有助於整體企業財務資訊揭露透明度的提升,並能真正達到自願性資訊揭露之效益。
Recent Taiwan Authorities promote corporate governance mechanism to encourage firm’s voluntary information and improve firm’s information disclosure and transparency particularly through revised laws and regulations, and to reduce the external investment of asymmetric information in order to strengthen public investors’ confidence in capital markets. However, the accuracy and reliability of voluntary information disclosure are still considerable doubt. This study investigates the effects of earnings management on voluntary and mandatory information disclosure and adopts Benford’s law use the condition of digits distribution to examine whether the financial statements of earnings before tax data are manipulated by the management and appear significantly anomaly. This study adopts listed companies from 1988 to 2012 in Taiwan to be research samples. And uses earnings before tax in month data to be proxy index of voluntary information index, and adopts earnings before tax in quarter and annual data to be proxy index of mandatory information index. Empirical results indicate earnings management behavior exists on both voluntary information disclosure and mandatory information disclosure. Further analysis finds that voluntary information disclosure deviated from the Benford’s law are larger than the mandatory information disclosure. Besides, the earnings before tax of annual data deviated from the Benford’s law are larger than the quarter data. The findings provided the empirical evidence of voluntary information disclosure tends to have strongly incentive on earnings management than mandatory information disclosure. Government authorities might consider strengthening governance and monitoring mechanism on voluntary information disclosure and mandatory information disclosure. The mechanism will help to enhance the overall transparency of corporate financial information disclosure, and can truly achieve the benefits of voluntary disclosure.
目錄
摘要 i
Abstract ii
目錄 iii
表目錄 iv
圖目錄 v
一、緒論 1
1.1研究背景 1
1.2研究動機與目的 3
二、文獻探討與發展假說 4
2.1盈餘管理定義 4
2.2班佛法則與財務報表 5
2.2.1會計資訊的內控管理與品質維護 5
2.2.2班佛法則 6
2.3自願性資訊揭露與強制性資訊揭露 9
三、研究樣本與研究方法 12
3.1運用班佛法則檢驗稅前淨利 12
3.2班佛法則公式與機率分配情形 14
3.3資料分析法 15
3.3.1卡方適合度檢定 16
3.3.2 Z值檢定統計量 16
3.3.3Cramer’s V 17
3.4研究樣本 17
3.5研究期間 18
3.6資料來源 18
四、實證結果與分析 19
4.1稅前淨利(月資料)與班佛法則(全體樣本) 19
4.2稅前淨利與班佛法則(電子產業樣本) 24
4.3稅前淨利與班佛法則(非電子產業樣本) 27
4.4稅前淨利(季資料)與班佛法則(全體樣本) 30
4.5稅前淨利(季資料)與班佛法則(電子產業樣本) 34
4.7稅前淨利(年資料)與班佛法則(全體樣本) 39
4.8稅前淨利(年資料)與班佛法則(電子產業樣本) 43
4.9稅前淨利(年資料)與班佛法則(非電子產業樣本) 43
五、結論與建議 52
六、參考文獻 54


表目錄
表1班佛法則第一位數機率分配表 13
表2 班佛法則個位數的預期比例表 15
表3 1988-2012年繼續營業部門稅前淨利前五位數實證結果-全體樣本月資料(自願性資訊揭露) 22
表3.1 1988-2012年繼續營業部門稅前淨利前五位數實證結果-電子產業樣本月資料(自願性資訊揭露) 26
表3.2 1988-2012年繼續營業部門稅前淨利前五位數實證結果-非電子產業樣本月資料(自願性資訊揭露) 29
表4 1988-2012年繼續營業部門稅前淨利前五位數實證結果-全體樣本季資料(強制性資訊揭露) 32
表4.1 1988-2012年繼續營業部門稅前淨利前五位數實證結果-電子產業樣本季資料(強制性資訊揭露) 35
表4.2 1988-2012年繼續營業部門稅前淨利前五位數實證結果-非電子產業樣本季資料(強制性資訊揭露) 38
表5 1988-2012年繼續營業部門稅前淨利前五位數實證結果-全體樣本年資料(強制性資訊揭露) 41
表5.1 1988-2012年繼續營業部門稅前淨利前五位數實證結果-電子產業樣本年資料(強制性資訊揭露) 44
表5.2 1988-2012年繼續營業部門稅前淨利前五位數實證結果-非電子產業樣本年資料(強制性資訊揭露) 46
表5.2 1988-2012年繼續營業部門稅前淨利前五位數實證結果-非電子產業樣本年資料(強制性資訊揭露) 47
表6全體樣本稅前盈餘自願性資訊揭露與強制性資訊揭露之Cramer’s V值比較彙總表 49
表6.1電子產業樣本稅前盈餘自願性資訊揭露與強制性資訊揭露之Cramer’s V值比較彙總表 50
表6.2非電子產業樣本稅前盈餘自願性資訊揭露與強制性資訊揭露之Cramer’s V值比較彙總表 50
表6.3 本研究假說是否獲得接受,各位數實際機率是否明顯高於預期機率彙總表 51


圖目錄
圖1 班佛法則第1位數機率分配 13



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