In both biology and the human sciences, social groups are sometimes treated as adaptive units whose organization cannot be reduced to individual interactions. This group-level view is opposed by a more individualistic one that treats social organization as a byproduct of self-interest. According to biologists, group-level adaptations can evolve only by a process of natural selection at the group level. Most biologists rejected group selection as an important evolutionary force during the 1960s and 1970s but a positive literature began to (...) grow during the 1970s and is rapidly expanding today. We review this recent literature and its implications for human evolutionary biology. We show that the rejection of group selection was based on a misplaced emphasis on genes as “replicators” which is in fact irrelevant to the question of whether groups can be like individuals in their functional organization. The fundamental question is whether social groups and other higher-level entities can be “vehicles” of selection. When this elementary fact is recognized, group selection emerges as an important force in nature and what seem to be competing theories, such as kin selection and reciprocity, reappear as special cases of group selection. The result is a unified theory of natural selection that operates on a nested hierarchy of units.The vehicle-based theory makes it clear that group selection is an important force to consider in human evolution. Humans can facultatively span the full range from self-interested individuals to “organs” of group-level “organisms.” Human behavior not only reflects the balance between levels of selection but it can also alter the balance through the construction of social structures that have the effect of reducing fitness differences within groups, concentrating natural selection (and functional organization) at the group level. These social structures and the cognitive abilities that produce them allow group selection to be important even among large groups of unrelated individuals. (shrink)

A model is presented to account for the natural selection of what is termed reciprocally altruistic behavior. The model shows how selection can operate -against the cheater (non-reciprocator) in the system. Three instances of altruistic behavior are discussed, the evolution of which the model can explain: (1) behavior involved in cleaning symbioses; (2) warning cries in birds: and (3) human reciprocal altruism. Regarding human reciprocal altruism, it is shown that the details of the psychological system that regulates this altruism can (...) be explained by the model. Specifically, friendship,d islike, moralistic aggression, gratitude, sympathy, trust, suspicion, trustworthiness, aspects of guilt, and some forms of dishonesty and hypocrisy can be explained as important adaptations to regulate the altruistic system. Each individual human is seen as possessing altruistic and cheating tendencies, the expression of which is sensitive to developmental variables that were selected to set the tendencies at a balance appropriate to the local social and ecological environment. (shrink)

Ambitious and elegant, this book builds a bridge between evolutionary theory and cultural psychology. Michael Tomasello is one of the very few people to have done systematic research on the cognitive capacities of both nonhuman primates and human children. The Cultural Origins of Human Cognition identifies what the differences are, and suggests where they might have come from. -/- Tomasello argues that the roots of the human capacity for symbol-based culture, and the kind of psychological development that takes place within (...) it, are based in a cluster of uniquely human cognitive capacities that emerge early in human ontogeny. These include capacities for sharing attention with other persons; for understanding that others have intentions of their own; and for imitating, not just what someone else does, but what someone else has intended to do. In his discussions of language, symbolic representation, and cognitive development, Tomasello describes with authority and ingenuity the "ratchet effect" of these capacities working over evolutionary and historical time to create the kind of cultural artifacts and settings within which each new generation of children develops. He also proposes a novel hypothesis, based on processes of social cognition and cultural evolution, about what makes the cognitive representations of humans different from those of other primates. -/- Lucid, erudite, and passionate, The Cultural Origins of Human Cognition will be essential reading for developmental psychology, animal behavior, and cultural psychology. (from the HUP website). (shrink)

Jaegwon Kim is one of the most preeminent and most influential contributors to the philosophy of mind and metaphysics. This collection of essays presents the core of his work on supervenience and mind with two sets of postscripts especially written for the book. The essays focus on such issues as the nature of causation and events, what dependency relations other than causal relations connect facts and events, the analysis of supervenience, and the mind-body problem. A central problem in the philosophy (...) of mind is the problem of explaining how the mind can causally influence bodily processes. Professor Kim explores this problem in detail, criticizes the nonreductionist solution of it, and offers a modified reductionist solution of his own. Both professional philosophers and their graduate students will find this an invaluable collection. (shrink)

Explores the development of the ideas of evolutionary biology, particularly as affected by the increasing understanding of genetics and of the chemical basis of inheritance.

The thesis that Dennett argues for in Breaking the Spell: Religion as a Natural Phenomenon has a double aspect. First, religion being but one natural phenomenon among many should be subject to scientific investigation. Resistance to this notion constitutes the first spell or taboo and is in complicity with the second “master” spell, that of the phenomenon of religion itself. Dennett’s tentative naturalistic recommendation is two-pronged: he primarily deploys an evolutionary biology perspective, and derivatively a highly suggestive appeal to memetics. (...) To acknowledge that religion is natural “is only the beginning of the answer, not the end”. Religion as a natural phenomenon has to answer to Dennett’s Darwinist refrain — cui bono? (to whose advantage?). And derivatively, how or why highly exotic and implausible supernatural religious ideas (or memes) are transmitted and sustained? Humankind, naturally disposed cause-seeking creatures, are inclined to hypostasize all manner of beliefs (virtual agents free to evolve to amplify our yearnings or our dreads — when explanation of some phenomenon is not forthcoming — this constitutes the “master” spell. (shrink)

This book dares to challenge natural selection--not in the name of religion but in the name of good science. Most scientists are so terrified of religious attacks on the theory of evolution that it is never examined critically. There are significant scientific and philosophical problems with the theory of natural selection. Darwin claimed the factors that determine the course of evolution are very largely environmental. Empirical results in biology are increasingly calling this thesis into question. The authors show that Darwinism (...) is committed to inferring, from the premise that a kind of creature with a certain trait was selected, the conclusion that that kind of creature was selected for having that trait. Though such inferences are fallacious, they are nevertheless unavoidable within the Darwinist framework. Ultimately, Jerry Fodor and Massimo Piattelli-Palmarini level a devastating critique against Darwinist orthodoxy and suggest new ways of thinking about evolution.--From publisher description. (shrink)

1. Introduzione Dalla pubblicazione de La costruzione della realtà sociale di John Searle sono oramai passati più di dieci anni. In questo periodo il dibattito è stato così intenso da arrivare a definire una vera e propria disciplina filosofica: la cosiddetta “ontologia della realtà sociale”. Nonostante gli studi in quest’ambito si siano concentrati su aspetti anche molto distanti fra di loro (dalla normatività degli atti istituzionali alla possibilità d’esistenza dell’intenzionalità colletti...

In this paper I discuss a widespread cultural phenomenon, superstition, from an adaptive point of view. At first, I propose a general interpretative framework, based on the concept of abduction. Then, I analyze two reductionist theories. The first one, Sociobiology, considers superstition as a strategy to control the population growth, an extension of an adaptive biological behavior. The second one, Memetics, transfers the adaptive role of superstition to an evolutionary mechanism separated from the biological one. I criticize both proposals and (...) I suggest an alternative non-reductionist interpretation: superstitions can be considered as strategies aimed at the cohesion of a population. (shrink)

The technological advances of contemporary society have outpaced our moral understanding of the problems that they create. How will we deal with profound ecological changes, human cloning, hybrid people, and eroding cyberprivacy, just to name a few issues? In this book, Lorenzo Magnani argues that existing moral constructs often cannot be applied to new technology. He proposes an entirely different ethical approach, one that blends epistemology with cognitive science. The resulting moral strategy promises renewed dignity for overlooked populations, both of (...) today and of the future. (shrink)