试析董事会结构对会计信息披露及时性的影响——基于2005-2007年沪市A股上市公司年报数据的实证研究

Does the Board Structure Affect the Timeliness of the Accounting Information Disclosure?——An Empirical Study Based on 2005-2007 Annual Report Data of Shanghai A-share Listed Companies

会计信息作为市场信息的重要组成部分,其披露的及时性对市场监管者、投资者而言都具有极其重要的作用。本文在国内外学者对会计信息披露及时性影响因素的研究基础上,以我国2005年至2007沪市A股上市公司披露的1 872个财务年报为样本,对上市公司董事会结构对会计信息披露及时性的影响效应进行t检验实证分析,结果表明董事会结构在一定程度上影响着会计信息披露的及时性,董事会规模与会计信息披露及时性正相关,独立董事比例与会计信息披露及时性负相关。同时,研究发现近年来我国上市公司的会计信息披露及时性在逐年提高。

As an important component of market information, the timeliness of accounting information disclosure plays important role for both market regulators and investors. In this paper, the author applies related studies of scholars at home and abroad, and selecls 1872 annual reports of Shanghai A-share listed companies from 2005-2007 as main samples to conduct an empirical analysis of t-test on the impact of structure of board of directors to timeliness of the accounting information disclosure. The results show that the structural characteristics of the board of directors affect the timeliness of the accounting information disclosure to some extent. The size of board of directors is positively correlated with the timeliness of the accounting information disclosure while the proportion of independent directors has a negative correlation with it. Meanwhile, the study has found that the timeliness of the accounting information disclosure of China＇ s listed companies improved gradually in recent years.