The document discusses conflict in outdoor recreation that can arise from different types of recreational activities interfering with each other. It presents a theoretical model of conflict proposed by Jacob and Schreyer that identified four factors - activity style, resource specificity, mode of experience, and lifestyle tolerance - that can give rise to conflict between recreationists. Empirical studies have supported this model and also found that motivations, goals, social values, and perceptions between groups can influence conflict. An expanded conflict model is proposed that recognizes conflict can occur within and between activities as well as with managers and other resource uses. Managing conflict may involve approaches like zoning of activities, educational programs, or active management.