Research of the accounting theory for shareholders' equity reflecting the change in the presentation of financial statements.

现行会计准则要求披露净收入（损益）和综合收益。在20世纪80年代，它被要求披露经通货膨胀或价格变化调整的多项收入数字。本研究在对会计准则和会计文献的历史和国际比较研究的基础上，阐明了这一点的差异和基本原理。虽然采用了多重收入概念和多重资本概念，但80年代的会计处理是多重计量，与现在的会计处理有所不同。现行会计处理可以解释为双重确认，而不是双重计量。只要循环使用其他综合收益项目，就可以解释为在同一资本概念下，采用了基于双重确认的双重收益概念。以债务或可转换债务发行的股票购买权证是或有股权融资的常见形式。它们可以用于补偿目的，如股票期权，也可以用于其他目的，如股权计划，如反敌意收购措施。由于这些期权公允价值的波动可能是重大的，因此必须讨论如何对这些变化进行会计处理。日本先前的研究并不能证明股票期权和认股权证失效所确认的收益是价值相关的。但这并不意味着负债分类的股票期权和股票认股权证不会提高价值相关性。因为日本会计只反映了授予日失效股票期权的公允价值，并没有完全反映这些期权在授予日之后公允价值的变化。评估或有权益工具公允价值变动的价值相关性需要进一步研究。

Current accounting standards require disclosure of net income (profit and loss) and comprehensive income. During 1980s, it was required to disclose multiple income figures adjusted for inflation or price change. This research clarifies the difference and rationale on that point based on the historical and international comparative research of the accounting standards and accounting literatures. Although multiple concepts of income and multiple concepts of capital were applied, those in 1980s were multiple measurements, which was different from the current accounting treatments. Current accounting treatments can be interpreted as dual recognitions instead of dual measurements. As long as other comprehensive income items are recycled, it could be interpreted that dual concepts of income based on dual recognitions are applied, under the same capital concept.Stock purchase warrants issued with debt or convertible debts are popular forms of contingent equity financing. And they could be used for compensation purpose such as stock options and for other purpose like rights plan as anti-hostile takeover measure. Because the fluctuation of fair value of those options could be material, how those changes should be accounting for has to be discussed. Prior study in Japan could not prove that the gains recognized from the lapse of stock options and stock purchase warrants were value relevant. But that does not mean liability classification of stock options and stock purchase warrants will not improve the value relevance. Because Japanese accounting only reflect the grant date fair value of the lapsed stock option and does not fully reflect the change in fair value of those options after the grant date. Further research is required to evaluate the value relevance of changes in fair value of contingent equity instruments.