This document summarizes Lawrence Kohlberg's theory of moral development, which proposes that moral reasoning develops through six stages across three levels - pre-conventional, conventional, and post-conventional. It describes the characteristics of reasoning at each of the first four stages, including obeying rules to avoid punishment (Stage 1), acting in one's self-interest (Stage 2), pleasing others and maintaining relationships (Stage 3), and upholding laws and social order (Stage 4). An example is also provided to illustrate potential responses from each of these first four stages.