We consider a difference-in-differences setting with a continuous outcome, such as wages or expenditure. The standard practice is to take the logarithm of the outcome and then interpret the results as an approximation of the multiplicative treatment effect on the original outcome. We argue that...

We analyse how the labour market implicitly evaluates Italy's higher education system by estimating differences in employment and earnings across universities. We use our estimates to produce three rankings of universities based, respectively, on employment, earnings and employment-weighted...