Second, this collection of cognitive programs evolved in the Pleistocene to solve the adaptive problems regularly faced by our hunter-gatherer ancestors-...

In Norms in the Wild, distinguished philosopher Cristina Bicchieri argues that when it comes to human behavior, social scientists place too much stress on rational deliberation. In fact, she says, many choices occur without much deliberation at all. Two people passing in a corridor automatically negotiate their shared space; cars at an intersection obey traffic signals; we choose clothing based on our instincts for what is considered appropriate. Bicchieri's theory of social norms accounts for these automatic components of coordination, where (...) individuals react automatically to cues that focus their attention on what the norm is in that situation. Social norms thus act as rules for making choices in a social world where people expect others -- often unconsciously -- to follow the same rule. Some norms enable seamless social co-operation, while others are less beneficial to human flourishing.Bicchieri is famous for her interdisciplinary work on game theory and most recently her work on social norms, and Norms in the Wild represents her latest challenge to many of the fundamental assumptions of the social sciences. Bicchieri's work has broad implications not only for understanding human behavior, but for changing it for better outcomes. People have a strongly conditioned preference for following social norms, but that also means that manipulating their expectations can cause major behavioral changes. Bicchieri has been working recently with UNICEF and other NGO's to explore the applicability of her views to issues of human rights around the world. Is it possible to change social expectations around forced marriage, genital mutilations, and public health practices like vaccinations and sanitation? If so, how? What tools might we use? This short book explores how social norms work, and how changing them - changing preferences, beliefs, and especially social expectations - can potentially improve lives all around the world. It will appeal to an unusually broad range of readers including philosophers, psychologists and others in behavioral sciences, and anyone involved in public policy or at NGOs. (shrink)

The transfer of food among group members is a ubiquitous feature of small-scale forager and forager-agricultural populations. The uniqueness of pervasive sharing among humans, especially among unrelated individuals, has led researchers to evaluate numerous hypotheses about the adaptive functions and patterns of sharing in different ecologies. This article attempts to organize available cross-cultural evidence pertaining to several contentious evolutionary models: kin selection, reciprocal altruism, tolerated scrounging, and costly signaling. Debates about the relevance of these models focus primarily on the extent (...) to which individuals exert control over the distribution of foods they acquire, and the extent to which donors receive food or other fitness-enhancing benefits in return for shares given away. Each model can explain some of the variance in sharing patterns within groups, and so generalizations that ignore or deny the importance of any one model may be misleading. Careful multivariate analyses and cross-cultural comparisons of food transfer patterns are therefore necessary tools for assessing aspects of the sexual division of labor, human life history evolution, and the evolution of the family. This article also introduces a framework for better understanding variation in sharing behavior across small-scale traditional societies. I discuss the importance of resource ecology and the degree of coordination in acquisition activities as a key feature that influences sharing behavior. (shrink)