International agricultural research often uses quasi-experimental designs when implementing on-farm research and development activities. Therefore, impact assessment methodologies are needed, which are effective in circumventing the resulting selection bias inherent in such research designs....

This paper analyses investments of some 2000 farm households in rural villages in three provinces of Northeast Thailand. We use a multinomial logit model to analyse the determinants of different types of investments in agriculture as well as small scale enterprises and a hurdle model to...