XBRL技术对我国上市公司盈余质量的影响研究

发布时间：2018-03-20 13:45

本文选题：XBRL　切入点：盈余质量　出处：《华北电力大学(北京)》2017年硕士论文　论文类型：学位论文

【摘要】：在资本市场环境下,上市公司公开披露的财务报告信息是投资者赖以决策的重要依据,增加企业的财务报告信息含量,有利于提高企业的盈余质量,但是传统财务报告多为静态形式,灵活性较差,直接利用数据进行二次加工的难度也很大,且出错率较高,使得通用问题、虚假信息等层次不穷。20世纪由美国提出的XBRL财务报告技术有效地弥补了传统财务报告周期长、灵活性差等缺点,将财务报告信息更加及时、有效地传递给外部使用者。最近几年在中国资本市场上,XBRL技术应用也逐渐增多,XBRL技术的财务报表能够导致股价积极变动,从而影响盈余质量。因此,本文主要研究中国企业应用XBRL技术是否对企业的盈余质量产生影响。本文选取中国沪市220家上市公司披露XBRL的报告这一事件,运用事件研究法,首先计算了样本研究窗口期内的累计超额报酬率,然后运用非参数配对样本Wilcoxon符号秩对事件前后的累计超额报酬率是否存在显著差异进行检验,最后利用回归分析法检验XBRL财务报告披露对企业盈余质量的影响。通过实证研究,得到了一些结论:上海证券交易所样本在XBRL财务报告披露前后,累计异常收益率存在显著差异,并且披露后要高于披露前,此外,无论基于年度的横截面回归结果还是基于整体样本的面板数据回归结果,均显示XBRL财务报告披露后能显著提高企业的盈余质量,说明XBRL财务报告的披露增加财报中信息含量,提高企业盈余质量。该结论在不同行业的企业(制造业和服务业)以及不同股权性质的企业(国有企业和非国有企业)下均一致,不过XBRL技术对制造业企业盈余质量的正效应要略高于服务业企业,而对非国有企业的盈余质量的正效应要略高于国有企业。
[Abstract]:In the capital market environment, the public disclosure of financial report information by listed companies is an important basis for investors to make decisions. Increasing the information content of enterprises' financial reports is conducive to improving the earnings quality of enterprises. However, the traditional financial report is mostly static, so it is less flexible, and it is very difficult to use the data directly for secondary processing, and the error rate is high, which makes the general problem. The XBRL financial reporting technology put forward by the United States in the 20th century has effectively made up for the shortcomings of the traditional financial reporting system, such as long financial reporting cycle, poor flexibility and so on, and made the financial report information more timely. The application of XBRL technology to Chinese capital markets has been increasing in recent years. The financial statements of XBRL technology can lead to positive changes in stock prices, thus affecting the quality of earnings. This paper mainly studies whether the application of XBRL technology in Chinese enterprises has an impact on the earnings quality of enterprises. This paper selects 220 listed companies in Shanghai Stock Exchange of China to disclose the report of XBRL, and applies the method of event research. Firstly, the cumulative excess return rate in the window period is calculated, and then the nonparametric Wilcoxon symbol rank pair is used to test whether there is significant difference in the cumulative excess return rate before and after the event. Finally, we use regression analysis to test the effect of XBRL financial report disclosure on earnings quality. Through empirical research, we get some conclusions: Shanghai Stock Exchange sample before and after XBRL financial report disclosure, There are significant differences in cumulative abnormal returns, which are higher after disclosure than before, in addition, whether based on annual cross-sectional regression results or panel data regression results based on the overall sample, The results show that the disclosure of XBRL financial reports can significantly improve the earnings quality of enterprises, indicating that the disclosure of XBRL financial reports increases the content of information in the financial statements. This conclusion is consistent among enterprises in different industries (manufacturing and service industries) and enterprises with different equity nature (state-owned enterprises and non-state-owned enterprises). However, the positive effect of XBRL technology on the earnings quality of manufacturing enterprises is slightly higher than that of service enterprises, while the positive effect on the earnings quality of non-state-owned enterprises is slightly higher than that of state-owned enterprises.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：F275;F832.51

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