This document discusses stages of community development and models of group development. It summarizes Peck's stages of community as pseudocommunity, chaos, emptiness, and community. It also outlines Tuckman and Jensen's model of group development, which includes forming, storming, norming, performing, and mourning/adjourning stages. The document provides information on understanding individual, task, and group maintenance needs and balancing these needs. It discusses Maslow's hierarchy of human needs and behaviors that can occur in groups, such as resisting, manipulating, helping, emotional, and sub-grouping behaviors.