We formalize our argument in a game-theoretic model that allows us to specify the boundary conditions for the emergence of signalling norms. We argue that adherence to signalling norms constitutes a commitment promoting parochial cooperation rather than a quality-revealing signal facilitating partner choice. After reviewing the mechanisms that explain the emergence of cooperation and coordination norms, we introduce the notion of signalling norms as markers of group distinction. The need to overcome this uncertainty arises when different groups compete for scarce resources and individuals must be able to identify, trust and cooperate with their fellow group members. Signalling norms emerge as a result of the uncertainty about who is a friend and who is a foe. We argue that signalling theory constitutes the basis for the understanding of the emergence of such norms, which we call signalling norms. However, social norms prescribing wasteful and harmful behaviours have eluded such explanations. Why do people adorn themselves with elaborate body piercings or tattoos, wear obstructing garbs, engage in life-threatening competitions and other wasteful and harmful but socially stipulated practices? Norms of cooperation and coordination, which promote the efficient attainment of collective benefits, can be explained by theories of collective action. Use these links to order the book directly: (Routledge). Instructors can request a free inspection copy here: I hope this new textbook will equip the next generation of students with the knowledge and tools needed to analyze any sociological topic and any contemporary social problem - even those with which one is yet unfamiliar. Moreover, the textbook introduces a useful set of analytical principles and tools which helps students to think like a sociologist - such as how to derive a hypothesis, how to use micro-macro frameworks, and how to formulate interesting sociological questions. It presents key sociological theories and findings to students in an accessible way. I’m very happy to announce that after years of work my book “Introduction to Sociology” (Routledge) is finally out now! I wrote this textbook to provide sociology instructors with teaching materials that are based on up to date, rigorous sociological research.
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