新經濟時代來臨，企業的財富以及獲利的來源不再侷限於有形的資產，而是來自能為企業帶來競爭優勢的一切知識、能力與人力的總和，以及與組織策略相呼應的運作體系，也就是所謂的「智慧資本」(intellectual capital)。智慧資本不僅對既存的經濟型態產生重大的影響也對財務報表的價值攸關性造成相當大的衝擊，揭露更多的攸關資訊已是未來的趨勢，然而公司、會計師及券商的立場不同，對於資訊揭露的項目、程度與方式亦可能存有差異，因此本研究便從公司、分析師及會計師三種不同的觀點來探討智慧資本相關資訊的揭露。 　　本研究針對智慧資本的四大構面，人力資本、內部組織資本、外部關係資本與創新資本，各自發展出15項衡量指標，並以公司、會計師及券商為問卷發送的對象，以探討智慧資本衡量指標的重要性、揭露可行性與可能的揭露途徑等三項議題。 　　本研究發現，在60項的智慧資本衡量指標中共有57項是重要的，且透過因素分析可將指標做進一步的彙整，包括「人力資本」的能力態度、學經歷、人才培育與考核獎酬，「內部組織資本」的工作環境、組織架構、系統運作與資訊投入，「外部關係資本」的業務關係、知名度與經營風險以及「創新資本」的研發能力、創新投入、技術掌握與開發新業務。就整體而言，公司、會計師及券商對指標重要性的判斷頗具共識，並無明顯差異。 　　在57項重要的指標中，共有29項揭露可行性高的指標與26項揭露可行性低的指標，其他2項則無明顯傾向。其中，可行性低之指標大多屬於難被適當地表達與客觀驗證者，而揭露可行性高之指標則大多屬於量化的資訊或是具有書面的憑證可供確認。此外，公司、會計師及券商對指標揭露可行性判斷的差異並非來自於意見的相左，而是對可行性高低程度的判斷有所不同。 　　至於在衡量指標可能的揭露途徑上，本研究發現會計師明顯較公司及券商傾向於自願性揭露，而券商對於指標強制性揭露的要求則比公司來的強烈。另外，指標揭露可行性的高低影響指標可能的揭露途徑，揭露可行性越高則越容易傾向於強制性揭露，反之則容易傾向於自願性揭露。 / Time of knowledge economy is coming. Wealth and profits of business come from not only tangible assets but also everything which can brings enterprises advantages including knowledge, abilities, human resources and operating systems. This is what called “Intellectual capital”. Intellectual capital makes a big impact on value relevance of financial statements. Disclosing more information is necessary but enterprises, CPAs and brokerage have different stands and opinions each other about items, degrees and ways of information disclosure. So this paper wants to explore disclosure of related information of intellectual capital from different angles. 　　Based on four dimensions of intellectual capital — human resources capital, internal organization capital, external relationship capital and innovation capital, a questionnaire is developed. This questionnaire includes four dimensions, 60 indicators (each dimension has 15 indicators) and three main questions — degree of importance of indicators, degree of indicators which can be disclosed adequately and adequate ways of disclosure (compulsive or voluntary). Questionnaires are sent to three different groups — enterprises, CPAs and brokerage. 　　The empirical results indicate that 57 out of 60 indicators are important and can be summarized to “ability and attitude”, “education and career”, “workforce education” and “examination and compensation” from “human resources capital”; “working environment”, “organization structure”, “operating system” and “information input” from “internal organization capital”; “business relationship”, “popularity”, and “business risk” of “external relationship capital”; “ability of research and development”, “innovation input”, “held technology” and “new business development” from “innovation capital”. In addition, Judgments on degree of importance of indicators do not have significant differences between enterprises, CPAs and securities. 　　In 57 important indicators, there are 29 indicators which can be disclosed adequately and 26 indicators which can not (the rest indicators do not have significant tendency). The indicators which can not be disclosed adequately are almost which can not be expressed well or verified objectively. The indicators which can be disclosed adequately are those numbered information or have objective verified documents. Differences between enterprises, CPAs and securities do not come from contrary opinions but different judgments on degree. 　　About adequate disclosing ways of indicators, CPAs tend to voluntary disclosure much more than enterprises and securities. Securities want more compulsive disclosures than enterprises. Whether an indicator can be expressed adequately will influence adequate disclosing ways of indicators. The more an indicator can be expressed adequately, the more tendencies of compulsive disclosure will have.

本研究應用社會政治理論之概念性架構，探討民國96年至98年化工業及電子業之上市公司年報中有關環境資訊揭露程度。其中自願性環境資訊揭露影響之因素有公司規模、經營績效、ISO14001認證、環境支出預算、罰款與賠償以及國際化程度。 實證結果顯示，自願性環境資訊揭露與公司規模大小、是否取得ISO14001認證、環境支出預算、罰款與賠償以及國際化程度皆存在顯著正向的關係，其中又以是否取得ISO14001認證這個因素影響程度最大。至於化工業和電子業公司自願性環境資訊揭露受到何種因素較大，實證結果顯示化工業公司規模、經營績效以及環境支出預算愈高時，其環境資訊揭露正相關程度將大於電子業；而電子業若取得ISO14001認證及罰款與賠償金額愈高時，其環境資訊揭露正相關程度將大於化工業；此外，環境資訊揭露與國際化程度亦呈正相關。 / This study applies society political theory to explain the voluntary environmental disclosure in annual reports. The sample consists of firms in chemical and electronic industries in Taiwan during 2007 and 2009. The determinants of voluntary environmental information disclosure include firm size, economic performance, ISO 14001 certification, environmental expenditure budgets, penalty, and the extent of internationalization. The empirical results indicate that the firm size, economic performance, ISO 14001 certification, environmental expenditure budgets, penalty, the extent of internationalization are significant determinants of voluntary environmental disclosure while ISO 14001 certification is the most significant determinant. Moreover, the firm size, economic performance, and environmental expenditure budgets are more influential in chemical industry than in electronic industry as determinants of voluntary environmental disclosure. On the contrary, ISO 14001 certification and penalty are more significant for electronic industry. Finally, the extent of internationalization shows positive relation with voluntary environmental disclosure.

因應世界潮流，現代企業越來越重視企業責任（CSR），讓消費者知曉企業做了哪些「善行」是件重要的事，然而學術界關於CSR的研究雖然眾多，但針對CSR揭露進行探討的卻不多見。為此，本研究希望探討CSR訊息之揭露形式對於消費者的組織聯想有何影響。 提出三個問題：一、CSR揭露形式是否影響消費者對訊息的「信任程度」及對企業的「組織聯想」？以及如何影響？二、消費者對產品的涉入度是否影響消費者對企業CSR訊息的「信任程度」及對企業的「組織聯想」？三、消費者對CSR揭露訊息之信任程度，是否影響「組織聯想」？主要研究變項為產品涉入度、文本形式、揭露者以及議題類型。 研究發現，單一變項對於訊息信任程度以及組織聯想皆無顯著影響，但在有固定條件、或一個以上的交叉變項時，有多組交叉變項對於信任程度以及組織聯想出現顯著影響，且對訊息的信任程度確實影響組織聯想。 研究者提出以下結論：一、CSR訊息的揭露形式會影響消費者的組織聯想。二、設計CSR揭露訊息應該考量消費者的產品涉入度。三、CSR訊息之可信度會影響消費者的組織聯想。四、博愛類型的議題並不一定最好。 / Reflecting the world trend, Modern enterprises take corporate social responsibility （CSR） more seriously, and it’s important to let consumers know what beneficence enterprise have done. Though researches about CSR are numerous, there is few studies focusing on CSR disclosure. This article probes into the effect of CSR message disclosure forms on organization association of consumer. And focus on three questions: （1） Do disclosure forms of CSR messages affect consumers’ trust level as well as their organization association? And how do they affect? （2） Do different product involvement of customers will affect their trust level as well as their organization association? （3） Whether or not will the consumers’ trust level affect their organization association ? In order to answer these three questions, there are four major variables in this research: product involvement, text forms, discloser, and issue types. The findings indicate that each single variable has no significantly effect on trust level or organization association. However, when it was under some preconditions or cross- variable（more than one variable）, multiple situations show that different variables of disclosure messages do affect trust level and organization association. The research findings include:（1）forms of disclosing CSR messages would affect consumers’ organization association,（2）consumers’ product involvement should be considered when designing the disclosure message,（3）Reliability of CSR information would affect customers’ organization association, and（4）philanthropy is not the best type of issues.

恩隆（Enron）等管理當局舞弊案，是資訊不對稱所造成。為減少資訊不對稱之問題，各國對公司資訊揭露之範圍與內容規範甚多，沙氏法案（Sarbanes-Oxley Act of 2002）對公司財務揭露之要求即為例證，惟資訊不對稱之情形在資本市場中仍然很嚴重。 本文探討在市場資訊不對稱之情形下，投資人做投資決策時，是否考量公司資訊揭露之程度。本研究以Ohlson (1995)、Barth (1998)、Sloan (1996)及Fama and French (1992, 1995)作為理論基礎建構模型，探討資訊揭露程度對公司價值之影響。具體而言，本研究將揭露程度分為：「財務與營運」、「董事會及股權結構」及「公司網站」三類，針對傳統產業公司之資訊揭露程度與股價、權益市值及股票報酬等三類公司價值之關係進行實證研究。 實證結果發現，除了會計資訊對公司價值具有攸關性外，公司整體資訊揭露程度對公司之價值亦有顯著之正向影響。其中，「財務與營運」的揭露程度對三類公司價值均具有顯著的正向關係，「董事會及股權結構」的揭露程度對股價與權益市值具有顯著之正向關係，「公司網站」的揭露程度則與各公司價值間皆僅為正向但不顯著之關係。 / Information asymmetry may cause serious business fraud like Enron case. Countries around the word devote much effort enforcing regulation on the disclosure financial information, such as the requirements of Sarbanes-Oxley Act of 2002 in the USA. Based on Ohlson (1995), Barth (1998), Sloan (1996), and Fama and French (1995), this study investigates the market reaction to the financial information disclosure. The disclosure of financial information is decomposed into three categories including financial and operating disclosure, board and ownership structure disclosure, and website disclosure. How the stock price, market value and stock return are related to these financial disclosures is examined. As the results show, in addition to the fact that the accounting information is value relevant, the comprehensive financial disclosure has significantly positive effect on stock price, market value, and stock return, as the financial and operating disclosure does. However, the disclosure of board and ownership structure has significant positive effect only on both stock price and market value, but the market does not have significant reaction to the financial disclosure on website.

摘 要 本研究藉由分析台灣上市公司的控制權與現金流量請求權偏離程度，以及上市公司違反「重大訊息處理程序」的情況，探討上市公司發生財務危機與股權結構及即時性資訊揭露品質間的關聯性。在其他條件不變的情況下，上市公司控制股東的控制權越高，代理問題愈小，上市公司發生財務危機的可能性較低；當控制股東的現金流量請求權較高時，公司發生財務危機的可能性較低。當控制股東的現金流量請求權佔控制權的比率較低時，控制權與現金流量請求權的偏離程度較高，公司發生財務危機的可能性較高。上市公司違反「重大訊息處理程序」被罰款金額越高，表示公司即時性揭露品質越差，這類公司發生財務危機的可能性較高。本研究結果顯示上市公司的股權結構對於發生財務危機有顯著的關聯性；而發生財務危機的上市公司，其控制股東操縱即時性資訊揭露品質的情形較為嚴重，此結果和過去國內財務危機公司利用即時性資訊揭露品質的操縱介入股市的實際案例相符。 / Abstract By analyzing the deviation of control rights from cash flow rights, and the violation against ‘’Taiwan Stock Exchange Corporation Procedures for Verification and Disclosure of Material Information of Listed Companies’’ of listed firms, we investigate the relationship between financial distress and ownership structures, and that between financial distress and the quality of immediate disclosures. We find (1) the higher the control rights of controlling stockholders, the lower the possibility of financial distress, (2) the higher the cash flow rights of controlling stockholders, the lower the possibility of financial distress and (3) the greater the deviation of control rights from cash flow rights, the higher the possibility of financial distress. Besides, the more frequent the violation of listed firms against TSEC’s regulation, the worse the immediate disclosure qualities and the higher the possibility of financial distress. The ownership structure of TSEC listed firms has significant impact on financial condition and the controlling shareholders in financial distress firms tend to defer disclosure material information. The findings are consistent with the real cases investigated in TSEC reports.

企業須揭露的資訊，並不以財務資訊，甚至營運資訊為已足。美國標準普爾公司所做的公司透明度與揭露調查，不僅包括財務資訊，也注重非財務資訊。這些非財務資訊包括所有權之結構及與投資者之關係，以及董事會結構與運作過程二類資訊。OECD建議，企業至少應揭露七項資訊中，有一項為「董事會成員及主要經營階層，及其報酬」，可見「董監經理人相關資訊」的重要性，不亞於財務資訊與營運資訊。但我國企業所揭露的非財務資訊，常有不足，且國際評等機構對我國企業資訊揭露的評價亦不高。 本研究認為，若能掌握影響企業董監經理人相關資訊揭露程度之因素，將有助於我國企業透明度之提升。在我國公司法制的設計下，企業資訊之揭露係由董事會負責，然董事會是否重視資訊揭露，可能與其成員之身份特性有關。因此，本研究欲檢視董事成員身份特性因素是否是影響董監經理人相關資訊揭露程度的重要因素。 本研究為我國首次關注企業非財務、營運資訊之揭露，所關心的資訊包括董監經理人之背景能力與薪資酬勞二類資訊。資訊揭露程度之衡量，係將樣本公司年報、財務報告中相關揭露內容，與本研究自行設計的揭露索引表之揭露項目逐一比對，並考慮資訊揭露詳細程度之差異，進行項目評分，再加總得出一揭露總分之方式。提出探討的董事身份特性變數包括家族董監事、法人機構董監事、法人股東是否同時選任為董事與監察人、獨立董監事，以及董事長是否兼任總經理等五項。 研究樣本為民國90年度已在台灣證交所上市之公司，排除金融保險業、官方色彩濃厚公司、判斷資料不全公司後，共計樣本數426家。實證結果顯示非關係法人董監事席次比例、獨立董監事席次比例與資訊揭露程度呈正向顯著關係，表示二者之監督，有助於提升企業資訊揭露程度。法人股東同時選任為董事與監察人時，資訊揭露程度較低，可見此情形有削弱企業監管機制，有礙資訊揭露的傾向。但家族董監事席次比例、董事長是否兼任總經理二變數，則與資訊揭露程度間未發現顯著關係。 / The information that enterprises should disclose is not limited to financial and operating information. The “Company Transparency and Disclosure Survey” by Standard & Poor’s not only includes financial information, but also focuses on nonfinancial information, including ownership structure and investor relations, and board structure and process. OECD suggests enterprises at least disclose seven kinds of material information, and one of them is “ members of the board and key executives, and their remuneration.” Thus it could reveal that “the information related to board and executives” is no less important than financial and operating information. But in our country enterprises disclosure level in nonfinancial information is not enough. Besides, national evaluation institutions set a low value on information disclosure level of our country’s enterprises. This study presumes that if we can control the influential factor of the disclosure level about information related to board and executives, it will help to enhance enterprises’ transparency in our country. In our country’s Company Law system, board is responsible for the information disclosure of enterprises. We surmise whether board emphasizes on information disclosure has relationship with characteristics of directors’ identities. So the study wants to examine if the characteristics of directors’ identities are the important factors influencing the disclosure level of the information about board and executives. This is the very first study in our country to focus the information disclosure on nonfinancial and nonoperating information, that related to background and remuneration of board and executives. The way to measure the disclosure level is that the study designs a disclosure checklist to examine if these disclosure items appear on sample enterprises’ information disclosure of annual report and financial report, and also scrutinize to what extent the disclosure detail of information reaches. Finally the study gives each item a point, and sums up a total grade. The study has five directors’ identities characteristics variables, including family directors, institutional directors, whether institutional shareholder serves as director and supervisor simultaneously, independent directors, and whether the board chairman serves as the CEO simultaneously. The study samples are companies listed in Taiwan Stock Exchange in 2001, but exclude banking and insurance industry, and government-involved companies or companies with insufficient judging information are excluded. The rest amount to 426 samples. The empirical result indicates that the proportion of nonrelated institutional directors and independent directors on board are positively related to the extent of information disclosure. If a company has an institutional shareholder serves as director and supervisor simultaneously, it has lower extent of information disclosure. The proportion of family directors on the board and whether the board chairman serves as the CEO simultaneously reveal no significant relationship with the extent of information disclosure.

觀察國內資本市場多年來之發展，民國八十七年『金融風暴』，有超過四十餘家上市櫃公司陸續發生財務危機，對當時傳統產業造成非常重大之衝擊；而近年來『地雷股』、『禿鷹集團』等事件，則有近二十家上市櫃公司陸續發生財務危機，不僅讓投資人不安、對資本市場產生信任危機，也讓企業主感受到莫大之經營壓力；而在探討上述財務危機公司之案例中，本研究深刻體認到，以代工為主之台灣產業而言，若企業僅有追求營收成長之策略，將難逃『利潤微薄化』之宿命；故當時雖然企業主可以利用每月營業額資訊，傳遞營收大幅成長或成長可期之訊息，加上『增資、擴廠』題材發布，可以得到市場一時之掌聲；但是，企業主疏忽經營核心競爭力之發展下，最後終將自食企業價值降低之惡果。 分析宏達科、洪氏英、陞技及勁永等四家公司，發現上述公司在出事前半年，每月營業額不僅無惡化之跡象，部分公司持續創新高，但股價已現疲乏且融券餘額逐漸增加，而觀察上述公司每季揭露之應收款項、存貨變化趨勢，或進而分析該公司之毛利、稅前損益變化情形；不難發現，亮麗之營收資訊往往僅是假象而已。而彙整個案研究之共同特徵為：企業主追求月營收之成長、資源之錯誤配置、短期績效決策優於長期企業價值經營；故不僅疏忽核心價值之建立，且往往造成市場削價競爭與產業結構之惡化；可見禿鷹集團、地雷股等事件，並非股市生態中之偶然，乃是目前生態下之必然發展。 綜上本研究認為，相較於全球主要資本市場每三個月面臨一次獲利報告及營收成長之壓力，我國公布月營業額之規定，更是企業主無比沉重之負擔；而實證說明每月營業額強制公告規定，不僅不足以保護善良投資人，甚至成為特定人士進行內線交易之幫凶。基於上述理由，本研究建議主管機關應全面檢討上述規定，並規劃相關配套措施，例如：改以自願性營收揭露之方式、鼓勵企業公佈合併營收資訊、舉辦法人說明會及加強投資人關係等；其次，提高會計師、承銷商、律師等專家之法律責任；並引導資本市場建置專業之資訊服務機制與獨立之資訊評鑑機制等，藉由外部市場之機制，強化企業資訊揭露之品質與內涵。最後，建議企業管理當局應專注於其核心競爭力之經營，並積極進行投資人間之溝通、維持資訊正確性與可信度，以獲得較佳之財務透明度與企業評價。 總而言之，資訊之揭露與傳遞，對於企業價值與股東權益間存有密切之關係，故改善我國定期公開資訊體系中每月營業額公布之規定，強化企業資訊之品質與內涵，相信不僅有助於保護投資者及引導企業價值創造，並可達到『發展經濟、保障投資』之證券管理目的。

本篇論文藉由行為財務學為橋樑，試圖利用法律經濟分析來檢視證券交易法的制定。結合了行為學、法律以及財務。首先利用認知心理學來介紹投資人行為偏誤的現象。整理出三項投資人處理資訊的偏誤，分別為有限注意、過度自信以及框架效果。在資本市場上投資人因為這些偏誤產生的無效率現象分別有，會計資訊解讀不完整、股價報酬產生動能現象、投資人過度交易、對公司事件宣告產生反應不足的現象、忽略資產配置的重要、處分效果以及偏好現金股利等等的現象。 而在了解行為模型對於投資人的行為預測以後，我們試著去進行法律經濟分析。行為財務學點出了效率市場假說不存在的證據，並試著以心理學的角度來解釋這些現象，但是行為財務學仍然缺乏一個良好的預測模型，它無法預測投資人何時會有反應不足，何時會有過度反應。不過行為財務學仍然提供了一些觀點值得政策制定者考慮。1.投資人偏好是不一致的，可能會因為情境改變而改變。2. 投資人只有有限的理性。3. 投資人會受到資訊揭露形式而有不同的判斷。根據這些觀點，我們以行為學的角度來分析證券交易法對於詐欺、操縱以及資訊揭露的規定。

本研究欲探討分析師推薦對管理當局所釋出資訊量之關聯性，當分析師越強力推薦公司時，公司的管理當局將願意提供較多的資訊給分析師做為預測的依據，則分析師對公司盈餘的預測也越準確。研究結果發現給予公司較佳推薦的分析師，預測準確性確實比給予公司較差推薦的分析師高。 之後再利用台灣證券暨期貨市場發展基金會設立的資訊揭露評鑑系統，探討資訊較為透明的公司，因為管理當局自願提供較多的資訊，即便分析師強力推薦，可能也無法得到額外的資訊，所以分析師推薦的效果應比資訊揭露較不透明的受評公司差。實證結果發現資訊揭露較透明的受評公司，分析師的推薦效果確實比資訊訊揭露較不透明的受評公司差。 / This thesis examines directly whether that managers provide more (less) information to analysts with more (less) favorable stock recommendations, based on the Barron et al. model (1998). Prior study documents the relative forecast accuracy of analysts before and after a recommendation issuance under the assumption that increases (decreases) in management-provided information will increase (decrease) analysts’ relative forecast accuracy. In contrast, this paper directly measure amount of information based on Barron et al. model (1998), and examine whether amount of information varies between pre- and post- a recommendation. Contrary to our prediction, the results show no significant difference in amount of information after and before recommendation issuance. However, we do find that analysts issuing more favorable recommendations experience a greater increase in their relative forecast accuracy compared with analysts with less favorable recommendations. In addition, we also find that the association is smaller for firms with higher information transparency than those with lower information transparency. The information transparency is measure by whether firms are listed in Taiwan Securities & Futures Information Center’s Information Disclosure and Transparence Ranking System (therefore TSFIC).

近年來，我國上市上櫃公司發行公司債籌措資金的情形蔚為風潮。依據我國目前規定，公司擬發行的公司債須由證期會認可之信用評等機構進行評等，並出具報告。既無信用評等向來重視會計資訊的品質，因此引起了本研究探討資訊揭露是否會降低公司債資金成本的動機。關於資訊揭露與負債資金成本的關係，僅見於Sengupta(1998)的研究，而本研究則試圖以資訊揭露能降低代理成本的角度，探討在國內資本市場中，資訊揭露是否與負債資金成本存在一反向關係。 本研究評估揭露指數方法與之前文獻所採用的的內容分析法不同。本研究是以公司發行公司債前一年度盈餘概估情形評估揭露指數口本研究採用最小平方法迴歸分析(OLS)對測試假說，其結果如下： 1.公司發行公司債之增額負債資金成本與資訊揭露程度存在反向關係。 本研究之實證結果顯示，我國資本市場中，公司資訊揭露程度與公司債之殖利率存有顯著的反向關係。顯示在債券的初級市場中，除了債券的條件與公司體質的好壞以外，資訊揭露也可能成為公司債殖利率的決定因素。 2.若公司債的代理成本較高，其資訊揭露對負債資金成本之反向變動關係會較強。 本研究以公司債轉換條款與擔保條款的有無，區分公司債代理成本的高低。實證結果發現，發行具轉換條款公司債之公司與發行不具轉換條款公司債之公司，其資訊揭露對負債資金成本影響顯著較低。驗證了設有轉換條款或擔保條款之公司債將因為債券本身的代理成本下降，而削弱資訊揭露對公司債殖利率的影響。也就是說若公司債屬於普通公司債或無擔保公司債時，資訊揭露對公司債之殖利率影響更大。因此對於有意發行無擔保公司債或普通公司債的公司而言，資訊揭露將更能降低其負債資金成本。 關鍵字：代理成本，負債資金成本，揭露程度，資訊不對稱 / In recent years, it has become a common phenomenon for listed corporations to issue bonds in Taiwan. Currently in Taiwan, the Securities and Futures Committee (SFC) forbids a corporation to issue bonds unless it has been properly rated by a credit rating agency certified by the SFC. Since the credit rating agency all along have generally placed a great deal of emphasis on the quality of accounting information, this research purports to investigate whether fuller disclosure of accounting information can indeed reduce the cost of debt capital. Only one study by Sengupta (1998) focused on the cost of debt capital, and addressed the issue about the relation between the disclosure level the cost of debt capital, and this study attempts to investigate whether a reverse relationship exists between disclosure and cost of debt capital in Taiwan form the angle of the agency cost. The method to determine the score of the disclosure level applied by this research is different from the content analysis method applied by prior studies. This research uses the earning estimation disclosure made in the year prior to the bond issuance, for measuring the disclosure level. This research applies the QLS model to test the hypotheses. After controlling for other variables, this research concludes that: 1.There may exist a reverse relation between the incremental cost of debt capital and the disclosure level. The result shows that there exists a significant reverse relation between the yield to maturity of bond and the corporate disclosure level. This finding leads us to conclude that because of the ability to lower the agency costs and control the information asymmetry, corporate disclosure level, couple with the terms of the bond and the issuing corporation's financial conditions, could be one determinant of the yield to maturity of the bond. 2.If the agency cost of the bond is higher, the reverse relation between the incremental cost of debt capital and the disclosure level could be stronger. In this research, agency costs are considered low when the bond is convertible or secured, or vice versa. The result shows that for the corporation issuing convertible or secured bonds, the impact of the disclosure is less significant. This finding verifies that when the bond is convertible or secured, the reverse relation between the cost of debt capital and the disclosure level could be weakened since the agency costs are lower. Therefore, this research draws a conclusion that for corporations that attempt to issue straight bonds or unsecured bonds, the disclosure level plays a more important rule to reduce the cost of debt capital. Key word: Agency Cost, Cost of Debt Capital, Disclosure Level, Information Asymmetry.