Psychology and sociology are both categorized as social sciences, and both study human behavior. However, psychology is the study of individual behavior, whereas sociology is the study of group behavior. Psychology deals with the possible problems an individual might have in social interaction with other individuals, but the main concern of sociology is the ways that different societies with different cultures deal with each other. Sociology asks and tries to answer questions like these: why does one society progress rapidly and another one remain primitive for centuries What is the main reason for revolution in a society What is the role of religion or art in a society Psychology asks and tries to answer questions like these; why does an individual adapt easily to a changing environment and another individual become mentally disturbed What are the causes of antisocial behavior What role does religion or art play in an individual’s mental and emotional life Psychology and sociology often work together in their study of human behavior. It is assumed that by better understanding individual motivation and behavior, more will be learned about group motivation and behavior. The reverse is also assumed: if scientists can learn more about social groups, they will learn more about individuals. A word which can take the place of "reverse" in the last sentence is________.