本研究主要探討公司設置獨立董監事及其專業性，對於分析師進行公司盈餘預測時是否會產生影響。由於上市櫃審查準則的規範，本研究將樣本分為兩群，第一群樣本為受此準則規範，須強制設置獨立董監事之IPO公司，第二群樣本為不受此準則規範之上市櫃公司，以研究透過獨立董監的設置，是否會對分析師行為產生影響。 研究結果發現，獨立董事的設置有助於降低分析師預測離散度，尤其是具有專業背景之獨立董事，對於降低分析師的預測誤差及預測離散度有顯著影響；在獨立監察人方面，僅具專業背景之獨立監察人對於提升分析師跟隨人數有顯著影響。另外，亦發現受規範公司樣本對於分析師預測行為之影響力明顯大於不受規範公司樣本，本研究推論其原因為國內除了新上市櫃有因應法規之需求而設置獨立董監事外，一般上市櫃公司並無強大誘因促使其設立獨立董監事，造成自願設置之樣本數量過少，而導致其實證結果不顯著。 / This study investigates the effect on the forecasting behavior of analysts through employing independent directors or independent supervisors and their professional background. According to the listed examination criterion of TSEC and OTC, the samples are classified into two groups: companies regulated by the law and non-regulated companies. The empirical results suggest that independent directors contribute to reducing forecasting dispersion of analysts. Furthermore, independent directors who have professional background contribute to reducing forecasting dispersion and forecasting error of analysts. In terms of independent supervisors, only people who have professional background are positively related with analyst following. The results also show that regulated companies have more significant influence on analysts than non-regulated companies do, indicating that in response to the listed examination criterion of TSEC and OTC, regulated companies have to employ independent directors and independent supervisors. On the other hand, there is no motive for non-regulated companies to employ independent directors and independent supervisors, resulting in no significant impact on forecasting behavior of analysts.

本文以1999年至2006年間台灣改名公司為樣本(控制組)，並以與改名公司相同產業、相同規模之非改名公司作配對樣本(對照組)，透過兩者之比較以探討企業更名前後分析師行為之差異。本研究旨在檢驗改名事件日之前後60天(樣本期間為120天)，分析師之盈餘預測、盈餘成長率預測及盈餘預測離散性之差異，另外也會對改名前後之分析師人數變動作檢測。為了探討樣本期間拉長而樣本數增加是否會影響檢測之情形，額外於第五章之敏感性分析作改名前後90天(樣本期間為180天)，改名對於分析師行為影響之研究。另外，為比較不同類型的改名方式或條件不同的改名公司其改名事件對於分析師行為之影響，本文將改名的樣本公司依不同標準分成以下三類：第一種分類以新名稱是否有當紅產業字眼的變化作區分，第二種分類依新舊名稱之改變是否明顯且易於分辨而作大改名與小改名之區分，第三種分類方式則依新名稱是否與公司本業相符合作區分。 研究結果發現，不論樣本期間為120天或180天，實證結果皆顯示，相對於非改名公司，分析師會向上修正改名公司之盈餘預測及盈餘成長率預測，惟120天之結果較180天更為顯著，推測可能原因為樣本期間拉長後，干擾預測變動的因素相對增加而使改名之影響減低。樣本期間120天之實證結果也顯示，若新名稱有當紅產業字眼者，則對事件日後分析師盈餘預測及盈餘成長率預測也有正向關係；屬於大改名者則對事件日後分析師盈餘預測有正向關係 / This paper investigates the impact of corporate name changes on analysts’ behavior around the time of their announcement by analyzing listed Taiwanese companies that changed their name over the period January 1999 to December 2006. To make further investigations, we conduct separate analysis of firms having certain popular industry related new names versus non-popular industry related new names; of firms having ‘major’ versus ‘minor’ name changes; of firms having good versus poor connection between business and new names. Generally, we find some evidence of a significant positive association between the corporate name change event and the change of analysts’ behavior. The empirical results show that in contrast to non name change firms, analysts will revise up EPS and EPS growth forecast for name change firms. The results also suggest that analysts tend to revise up EPS and EPS growth forecast for firms having certain popular industry related new names. Furthermore, we also find a positive association between major name changes and analysts’ EPS forecast.