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管理者过度自信对上市公司盈余管理影响研究

A Study on the Impact of Managerial Overconfidence on Earnings Management of Listed Companies

【作者】 孙晶

【导师】 薛光; 李延喜;

【作者基本信息】 大连理工大学 , 会计学, 2010, 硕士

【摘要】 盈余管理一直是会计学研究中的一个热点问题。2001年美国安然公司的财务造假丑闻被揭露后,上市公司的盈余管理问题更是备受关注。如何有效的控制盈余管理行为,不仅困扰着监管部门,也是研究学者不断探索的目标。近年来行为金融学的发展弥补了传统经济学“理性人”假设的不足之处。以往盈余管理相关问题研究主要是基于外部市场环境和内部公司治理的角度进行的,行为金融学将管理者的个人特征引入到盈余管理的研究当中。管理者过度自信就是其中之一。本文根据宏观经济环境的变化情况选择研究期间,以2007年和2008年沪、深两地上市公司为样本,研究管理者过度自信对上市公司盈余管理程度的影响。并且采用三种方法综合评价管理者过度自信的程度,通过配对样本T检验验证宏观经济波动对过度自信的影响;以修正的琼斯模型计量样本公司盈余管理程度;用多元回归模型实证研究管理者过度自信与盈余管理程度的关系。实证研究表明,管理者过度自信与宏观经济形势呈正相关关系,随着宏观经济的下滑,过度自信的管理者数量减少;管理者过度自信与上市公司盈余管理程度显著正相关,过度自信的管理者更容易进行盈余管理。

【Abstract】 Earnings management has always been a hot topic of accounting research. After the financial fraud scandal of Enron Corp. was exposed in 2001, earnings management received much more concern. How to control the earnings managemental behavior efficiently not only obsesses the monitor departments, but also is the constant object of researchers. Resently, the development of behavioral finance made up the deficiency of traditional economics. In the past, most studies related to earnings management based on external markets environment and internal corporate governance.The behavioral finance took managers’personal characters into earnings management studies. One of them was managerial overconfidence.This paper selected the research period according to the fluctuation of macroeconomics. It took Chinese listed companies of 2007 and 2008 as samples and compared the impact of managerial overconfidence on earnings management. Then it calculated the managerial overconfidence and earnings management, and analyse their relationship by regression model.The research achievements show that managerial overconfidence has significantly positive relationship with macroeconomical fluctuation and earnings management.

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