This document discusses mechanisms of cultural change and acculturation processes in international development. It describes how cultures change through invention, diffusion, migration, and devolution. Acculturation occurs through contact between groups and can involve substitution, syncretism, addition, or deculturation. The results of acculturation are assimilation, incorporation, extinction, or adaptation of cultures. Anthropologists can inform development approaches through traditional development which aims to make projects successful, or critical development which questions who benefits.