中文摘要：

本文选取预告的及时性、精度、偏差和是否出现修正预告等四个指标分析上市业绩预告行为的“持续性”。研究结果表明，上市公司业绩预告的及时性、精度和预告的修正行为均具有显著的持续性；而业绩预告的偏差虽然具有一定的持续性，但并不总是显著。

英文摘要：

This paper examines the persistence of management earnings forecasts in four ways, that is, the timeliness, precision, bias, and revision. The results indicate that the timeliness, precision and revision of management earnings forecasts show signif- icant persistence. The persistence of management forecast bias doesn＇ t hold in all analyses.