This volume discusses the difference between how groups operate versus how individuals behave. Principles of Sociology: Group Relationships & Behavior is the second title in Salem's Principles of Sociology series. This series is intended to introduce students and researchers to the fundamentals of important and far-reaching topics in sociology using easy-to-understand language. The field of sociology is vital in the world we live in today, and relevant in many social groupings and behaviors. This work includes categories such as: "Social Movements & Collective Behavior," "Stratification & Class in the U.S.," "Social Interaction in Groups & Organizations," and "Sociology of Religion." The entries in this volume are arranged in an A to Z order by section, making it easy to find the topic of interest. Each entry includes the following: Abstract giving a brief introduction to the topic; Overview that presents key terms and concepts; Clear, concise presentation of the topic, including a discussion of applications and issues; Definitions of key Terms & Concepts; Bibliography for further reading. The back matter in Principles of Sociology: Group Relationships & Behavior contains a thorough and valuable index. The essays in this volume are written for a varied audience. Our goals include attention to clarity and avoidance of unnecessary jargon. For those readers who desire more specific information on any one topic, each essay includes a list of entries for further reading.