best of our knowledge, this is the first model that facilitates the identification in the case of direct network effects …

. This dissertation contributes to the existing body of work by focusing on issues related to parameter identification.In the … used to determine the identifiability, and estimate the parameters of such models. I derive conditions for identification … models, as well as for detecting identification problems.In the third essay I develop a methodology for analyzing …

identification lies at the root of these differences. To deal with this lack of identification, we propose an identification strategy … subjective choices due to a lack of identification. We apply our methodology to the pollution-income relationship of both CO2 …