People vary widely with respect to their personality traits, emotional and cognitive style, technical knowledge, and other demographic variables, including age, gender, and cultural background. Software projects require effective communication and collaboration by many people. At the same time, emerging trends in software engineering and artificial intelligence are fundamentally redefining the concepts of cooperation, coordination, communication, and what it means to be human. The CHASE conference seeks to grow a body of knowledge on the important role of people in software development, how people cooperate and collaborate to design and develop software systems, and how these processes can be improved.