This paper reports the results of an individual real effort laboratory experiment where subjects are paid for measured performance. Measured performance equals actual performance plus noise. We compare a stable environment where the noise is small with a volatile environment where the noise is...

This paper examines the earnings premium to computer use in a developing country: Ecuador. We use different approaches to examine whether the premium is causal. Controlling for an extensive set of observables, we find an earnings difference between users and non-users of around 20%. Using first...

This paper reports about a randomized experiment in which training vouchers of €1000 were given to low-skilled workers. The vouchers increase training participation by almost 20 percentage points in two years, relative to a base rate of 0.45. This increased participation comes at a substantial...