測準確度,而攸關性探討預測資訊發佈時市場之反應。本研究分析盈餘組成份子
之相對可靠性與攸關性後,再將樣本依可靠性分群,觀察可靠性高低是否會影響
盈餘及其組成份子之攸關性。在可靠性方面之實證結果顯示,盈餘組成份子預測
數字可靠性不同,最高為營業收入,最低為稅後盈餘;在攸關性方面之結果顯示,
僅分析稅後盈餘預測數字時,稅後盈餘係具有攸關性;但加入其他盈餘組成份子
同時分析時,則只有營業淨利具有攸關性。此外,可靠性不同。 This paper studies the reliability and relevance of earnings components
forecasting released by listed companies in the Taiwan Stock Exchange. The
reliability is measured by forecast accuracy, and the relevance is measured by market
response when company release earnings forecasting information. First, to examine
the reliability and relevance of earnings components. Second, to observe whether
reliability influence the relevance of earnings and earnings components after dividing
samples into two groups by reliability. The empirical results show that, in aspect of
reliability, the reliability of earnings components are significantly different, the
highest one is sales revenue, and the lowest one is income after tax. In aspect of
relevance, income after tax is relevant. However, after adding other earnings
components into analysis, only operating income has relevance. Besides, the income
after tax in the group with low reliability is more relevant. And then probe into
earnings components further in the group with low reliability, only income after tax
has relevance. Therefore, the conclusion indicates that the reliability of earnings
forecast can influence the relevance of earnings forecast and earnings components.
Generally, investors concern about operating income and income after tax when they
get earnings forecasting information.