ICT Adoption and Heterogeneity in Production Technologies: Evidence for Chilean Retailers*
采用信息通信技术（ICT）会改变生产技术的性质。本文用智利零售商数据，通过潜在类别随机前沿模型发现三种不同的生产技术，ICT使用越多，企业越可能属于生产率更高的群体。
The adoption of information and communication technology (ICT) can have far-reaching effects on the nature of production technologies. Because ICT adoption is incomplete, especially in developing countries, different groups of firms will have different production technologies. We estimate a latent class stochastic frontier model, which allows us to test for the existence of multiple production technologies across firms and consider the associated implications for efficiency measures. We use a unique data set of Chilean retailers, which includes detailed information on ICT adoption. We find three distinct production technologies. The probability of membership in a more productive group is positively related to ICT use.