本研究欲瞭解財務報表資訊如何受到分類變動盈餘管理之影響,及會計資訊的價值攸關性是否隨之下降。本研究主要採用McVay (2006)的研究模型衡量預期核心盈餘與未預期核心盈餘,並以稅前淨利與預期核心盈餘計算分類變動盈餘管理的彈性。當分類變動盈餘管理彈性(預期非核心盈餘)為正時,表示企業管理階層有操作分類變動之空間;當企業未預期核心盈餘為正時,表示企業管理階層有從事盈餘管理之跡象。故本研究推論當未預期核心盈餘與分類變動盈餘管理彈性皆為正時,代表企業管理階層有從事分類變動盈餘管理之行為。本研究採用Ohlson (1995)所提出之實證模型,檢驗分類變動盈餘管理行為是否降低會計資訊價值攸關性。實證結果顯示當企業管理階層從事分類變動盈餘管理時,報導盈餘之價值攸關性呈現顯著下降。
This study explores how financial statement information is affected by earnings management using classification shifting and whether the value relevance of accounting information decreases. The model proposed by McVay (2006) is adopted to measure expected and unexpected core earnings. Pretax income and expected core earnings are then used to calculate the flexibility of earnings management through classification shifting. Positive flexibility of earnings management through classification shifting indicates that the company managers have the option to manipulate classification shifting; positive unexpected core earnings indicate that the managers have engaged in earnings management. Therefore, this study infers that when both unexpected core earnings and the flexibility of earnings management through classification shifting are positive, the company managers have engaged in earnings management using classification shifting. The empirical model proposed by Ohlson (1995) is adopted to assess whether earnings management through classification shifting decreases the value relevance of accounting information. The empirical results reveal that when company managers engaged in earnings management using classification shifting, the value relevance of reported earnings decreases significantly.