在我国扩大中等收入群体比重的政策目标下，探讨此群体阶层认同偏差（尤其是低位阶层认同偏差）的变化趋势有助于精准施策。本研究基于CSS2008—2021年全国抽样调查数据，运用趋势分析模型（APC-I）研究发现：在年龄、时期、世代三个时间变量中，中等收入群体低位阶层认同的时期效应最明显；时期效应表现为随时期推移而风险呈上升趋势，但2017年以后开始下降；各世代在不同时期的低位阶层认同有所不同，其中最特殊的是1992—1995年出生的群体，低位阶层认同风险有所减小；年龄效应影响较弱，低位阶层认同风险在低年龄段最低。以上发现对把握和引导中等收入群体的阶层意识和行为有重要参考意义。

In the context of the policy goal of expanding the proportion of middle-income groups in China, exploring trends in the discordant social status of this group, especially their downward identification of social status(DISS), can help to formulate precise policies. Based on the data from Chinese Social Survey from 2008 to 2021, this paper uses the APC-I model to analyze and found that:(1) Among the three temporal variables of age, period and cohort, the period effect of DISS is most pronounced for middle-income groups; (2) The period effect manifests itself as an upward trend in risk over time, but begins to decline after 2017; (3) The DISS of each cohort differs across generations at different periods, most notably, the propensity for DISS decreases for the 1992 - 1995 birth cohort; (4) The effect of age is weak, with the risk of DISS being lowest in the 20s age group.The above findings are important references for grasping and guiding the class consciousness and behavior of middle-income groups.

邹宇春

本文系中国社会科学院重大创新工程项目“共同富裕的阶段性衡量标准”（项目编号：2023YZD002）、创新工程项目“共同富裕视角下社会现代化指标体系研究”的阶段性成果。

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