Social origin and political participation: does education compensate for or reinforce family advantages and disadvantages?

Whether educational attainment compensates for or reinforces family disadvantages in political participation is currently a debated topic. Previous research has shown a consistent relationship between social origin and political participation in Western societies: individuals originating from low-socioeconomic-status families participate in politics less than those from high-socioeconomic-status families, which violates the democratic requirement of equality of political voice. In this paper, we investigate whether secondary education compensates for or reinforces the political inequality shaped by social origin. We used a German representative sample of 1012 identical twins aged 21-25 and applied family fixed effects regression models, which allowed us to control for measured and unmeasured social and genetic confounding. We found a positive effect of educational attainment on participation, which is most likely causal. Family disadvantage resulting from low parental education is compensated for by children finishing the academic track (Gymnasium) as opposed to the lower vocational track (Hauptschule). At the same time, family advantage originating from high parental occupational status is reinforced for children completing the academic track. We found no advantage nor disadvantage, compensation nor reinforcement, related to parental income. We conclude that compensation and reinforcement of family disadvantage may remain unnoticed if components of parental SES are not distinguished.