Intelligence, or cognitive ability, is a key variable in reproducing social inequality. On the one hand, it is associated with the social class in which a child grows up. On the other, it is a predictor of educational attainment, labor-market experiences, social mobility, health and well-being, and length of life. Therefore measured intelligence is important to our understanding of how inequality operates and is reproduced. The present analysis uses social surveys of children aged 10 to 11 years in Britain between 1947 and 2012 to assess whether the social-class distribution of intelligence has changed. The main conclusions are that, although children’s intelligence relative to their peers remains associated with social class, the association may have weakened recently, mainly because the average intelligence in the highest-status classes may have moved closer to the mean.

中文翻译：

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孝顺智商与家庭社会阶层，1947 年至 2012 年

智力或认知能力是再现社会不平等的关键变量。一方面，它与孩子成长的社会阶层有关。另一方面，它是教育程度、劳动力市场经验、社会流动性、健康和福祉以及寿命长度的预测指标。因此，测量的智力对于我们理解不平等如何运作和再现非常重要。本分析使用 1947 年至 2012 年间英国 10 至 11 岁儿童的社会调查来评估智力的社会阶层分布是否发生了变化。主要结论是，尽管儿童相对于同龄人的智力仍然与社会阶层相关，但这种关联最近可能已经减弱，