The literature on innovation has traditionally seen imitation processes as harmful to the development of new technologies, adverse for growth and detrimental to the welfare of consumers, producers and society at large. However, as we show in our paper, despite this widespread belief, imitation...

This paper investigates peer effects in the academic achievement of Costa Rican students. Two measures of peer effects are used: (1) a measure of a schools' average socioeconomic status and (2) a measure of unsatisfied basic needs at district level. The estimation of a three-level hierarchical...