國際財務報導準則(IFRS)提到:「藉由滿足基本品質特性可能達到某種程度之可比性。」然而,過去文獻未有探討公司提升財報基本品質的行為是否可以提升財報強化品質。本文發現,公司盈餘攸關性越高,其與同年同產業「其他公司」的盈餘可比性越高。本研究將「其他公司」之盈餘品質(盈餘攸關性、盈餘可比性、內部控制品質、盈餘持續性、盈餘可預測性與盈餘平穩化程度)分成相對較好或較差兩組之後,進一步發現當「其他公司」之盈餘品質較好時,均強化前述的實證發現。總體而言,本文發現更高的盈餘價值攸關性不僅能實現更好的盈餘可比性,而且當「其他公司」的盈餘品質更高時,公司攸關性與同年同產業「其他公司」盈餘可比性的正向關聯性更強。
The Conceptual Framework for Financial Reporting of the International Financial Reporting Standard (IFRS) claims that “some degree of comparability is likely to be attained by satisfying the fundamental qualitative characteristics” (that is, relevance and faithful representation). To the best of my knowledge, however, no study has been done that directly examines whether fundamental qualitative characteristics actually affect comparability, which is an enhanced qualitative characteristic. I calculate the earnings comparability between firm-pairs on an industry-year basis, as well as the value relevance of earnings for each firm, thus linking an enhanced qualitative characteristic with a fundamental one. I first find that the greater value relevance of earnings of a firm, the higher its earnings comparability with its peers. After classifying the peer firms into two groups according to relatively good or poor performance for each of the relevant variables (value relevance of earnings, earnings comparability in general, internal control, earnings persistence, predictable earnings, and earnings smoothness), I further find that, for each variable, this association is stronger when the peer firm belongs to the superior group. Taken together, the findings indicate not only that better comparability is attained by higher value relevance of earnings, but also that this association is stronger when peer firms have better earnings quality.