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 large. Subjects exert significantly more effort in the volatile environment …

lack of identification lies at the root of these differences. To deal with this lack of identification, we propose an … identification strategy that explicitly distinguishes between what can be identified on the basis of the data and what is a … consequence of subjective choices due to a lack of identification. We apply our methodology to the pollution-income relationship …

We show that a sufficient condition for the identification ofall parameters of the censored regression model with …