Social impact assessment (SIA) is a methodology to review the social effects of infrastructure projects and other development interventions. Although SIA is usually applied to planned interventions, the same techniques can be used to evaluate the social impact of unplanned events, for example, disasters, demographic change, and epidemics. SIA is important in applied anthropology, as its main goal is to deliver positive social outcomes and eliminate any possible negative or long term effects. Source: Wikipedia (en)