长期资产减值、盈余管理与价值相关性——基于新会计准则变化的实证研究

摘要

2006年2月15日财政部颁布了新的《企业会计准则》,引起了人们广泛的关注,准则中要求长期资产减值准备一经计提就不能转回,这与IASB和FASB对资产减值的规定明显不同。本文就是基于这样的背景,研究按照新会计准则提供的资产减值的信息是否增强了会计信息的价值相关性,一经计提就不能转回的规定是否能有效抑制上市公司的盈余管理行为。文章采用多元线性回归分析以及成对样本非参数检验的方法,对上述问题进行实证分析。研究结果表明,在新会计准则的规定下,上市公司计提的长期减值准备本身具有增量价值相关性,并且新准则实施以后上市公司计提的长期资产减值准备的价值相关性显著高于执行旧会计准则的年度。同时,新准则实施以后上市公司计提短期资产减值准备的盈余管理动机强于长期资产减值准备。这为2007年1月1日起实施的新会计准则中关于已计提的长期资产减值准备不可转回的变革提供了实证支持。%The objective of this paper is to test if the new accounting standards for impairment of long-term assets are effective in enhancing the value relevance of accounting information and restrain listed companies from earning management.The results show that under the new accounting standards a listed company＇s provision for impairment of long-term assets does have value relevance.The value relevance during 2007-2009 is higher than that during 2004-2006 when the old accounting standards were adopted.And after new accounting standards were adopted,intention of earning management through the impairment of short-term assets is more intense than through the impairment of long-term assets.