产品市场竞争与会计信息可比性

摘要

The paper measures the accounting information comparability of Chinese listed companies from 2002 to 2012 and then examines the effect of product market competition on accounting information comparability.The empirical results indicate:product market competition and accounting information comparability is negatively correlated,namely,fierce market competition will lead to the management to provide accounting information of low comparability.Consequently,compared to the corporate governance effect,the effect of proprietary cost effect and earnings pressure effect on accounting information comparability plays a leading role.Further examination finds that more R&D expenses will strengthen the proprietary cost effect,low audit quality will strengthen the earnings pressure effect and when the degree of investor protection is strong or in the case of a non state-owned company,the corporate governance effect is weak.Under these three types of circumstances,the negative correlation between product market competition and accounting information comparability is more significant.It also achieves the recognition of proprietary cost effect,earnings pressure effect and corporate governance effect.The results finally pass the robustness test of accounting standards change.%测度了2002-2012年中国上市公司的会计信息可比性值,然后实证考察了产品市场竞争对会计信息可比性的影响.研究结果表明:产品市场竞争程度与会计信息可比性显著负相关,即激烈的市场竞争会导致管理层提供可比性较低的会计信息,因此相对于产品市场竞争的公司治理效应来说,专有性成本效应与盈余压力效应对会计信息可比性起到了决定性作用.进一步检验结果发现,研发费用支出较多时,专有性成本效应增强;审计质量较低时,盈余压力效应增强;而投资者保护程度较强或非国有控股时,公司治理效应减弱,这几种情况下产品市场竞争程度与会计信息可比性的负相关性均会更加显著,检验过程中还同时实现了对专有性成本效应、盈余压力效应及公司治理效应的识别.研究结果最后还通过了会计准则变更的稳健性检验.