中文摘要：

追踪研究中普遍存在缺失数据,缺失数据处理方法的选择影响统计推断的精度及研究结果的有效性。首先,阐述缺失机制及判断方法,比较追踪研究中主要的缺失数据处理方法的特点、及实际应用中的缺失处理方法的选择和软件实现。其次,对国内心理学中92篇追踪研究文献进行分析,发现有59篇（64.13%）报告不同程度缺失,其中仅39篇报告了处理方法且均为删除法。未来研究应深入探讨现有缺失数据处理方法的有效性,进一步规范应用研究中缺失数据的处理。

英文摘要：

Missing data are not uncommon in longitudinal studies. Different techniques for handling missing data affect accuracy of the results and validity of statistical inference. Firstly, we will elaborate on missingness mechanism and how to judge them. Then we make a summary of missing data techniques that mainly used in longitudinal study, and how to choose an appropriate missing data technique as well as software for analysis. Secondly, based on a literature review of psychology research in China, among 92 studies, we found that 59 contain a certain degree of missing data. Among these, 39 studies reported using deletion method. The validity of missing data techniques needs further study, and the reporting of missing data in published research also needs to be better established.