In this episode of Policy Matters, hosts Matt Dickson and Franz Buscha talk to John Jerrim, Professor of Education and Social Statistics at the Institute of Education, University College London. Matt and Franz begin by asking John about his recent research into ‘overclaiming’ – otherwise known as ‘bullshitting’ (!) – amongst students, and how the findings give potential insights into some of the patterns of labour market outcomes we observe in the UK. John then discusses some of his cross-country comparative work and explains the “Great Gatsby Curve”; linking a country’s level of income inequality and degree of social mobility, and the role of education within the relationship. The programme ends with a discussion of the role of academic quantitative social scientists in informing public policy, how evidence can be mishandled, and how academic practice and the interface with policy might be improved to the benefit of all.