This Paper exploits area-based piloting and age-related eligibility rules to identify treatment effects of a labour market program – the New Deal for Young People in the UK. A central focus is on substitution/displacement effects and on equilibrium wage effects. The programme includes...

What one does not know, in the form of unobserved heterogeneity, can mislead one in empirical estimates. A simple model of intrahousehold allocations illustrates the possible importance of unobserved factors such as abilities in determining human resources and their impacts. The author reviews...