According to anthropological philosopher René Girard, an important human adaptation is our propensity to victimize or scapegoat. He argued that other traits upon which human sociality depends would have destabilized primate dominance-based social hierarchies, making conspecific conflict a limiting factor in hominin evolution. He surmised that a novel mechanism for inhibiting intragroup conflict must have emerged contemporaneously with our social traits, and speculated that this was the tendency to spontaneously unite around the victimization of single individuals. He described an unconscious (...) tendency to both ascribe blame and to imbue the accused with a sacred mystique. This emotionally cathartic scapegoat mechanism, he claimed, enhanced social cohesion, and was the origin of religion, mythology, sacrifice, ritual, cultural institutions, and social norms. It would have functioned by modifying the beliefs and behaviors of the group, rather than of the accused, making the act of accusation more important than the substance. This article aims to examine the empirical evidence for Girard’s claims, and argues that the scapegoat hypothesis has commonalities with several other evolutionary hypotheses, including Wrangham’s execution hypothesis on self-domestication, Dunbar’s hypothesis on the role of storytelling in maintaining group stability, and DeScioli and Kurzban’s hypothesis on the role of non-consequentialist morality in curtailing conflict. Potential implications of the scapegoat hypothesis for evolutionary psychology and psychiatry are discussed. (shrink)

It is widely thought that causal cognition underpins technical reasoning. Here we suggest that understanding causal cognition as a thinking system that includes theory of mind (i.e., social cognition) can be a productive theoretical tool for the field of evolutionary cognitive archaeology. With this contribution, we expand on an earlier model that distinguishes seven grades of causal cognition, explicitly presenting it together with a new analysis of the theory of mind involved in the different grades. We then suggest how such (...) thinking may manifest in the archaeological or stone tool record and techno-behaviors of the last three million years or so. Our thesis is threefold: (a) theory of mind is an integral element of causal cognition; (b) generally speaking, the more advanced causal cognition is, the more it is dependent on theory of mind; and (c) the evolution of causal cognition depends more and more on mental representations of hidden variables. Ultimately, the final or seventh grade of causal cognition allows us to reason from a network of hidden variables that, amongst other things, enables the learning, manufacture, and use of complex technological systems. It also facilitates the seamless mapping of knowledge between personal (egocentric), physical, and social networks that allows for newly devised and innovative technical and social outcomes. (shrink)

The presence of general intelligence poses a major evolutionary puzzle, which has led to increased interest in its presence in nonhuman animals. The aim of this review is to critically evaluate this question and to explore the implications for current theories about the evolution of cognition. We first review domain-general and domain-specific accounts of human cognition in order to situate attempts to identify general intelligence in nonhuman animals. Recent studies are consistent with the presence of general intelligence in mammals. However, (...) the interpretation of a psychometricgfactor as general intelligence needs to be validated, in particular in primates, and we propose a range of such tests. We then evaluate the implications of general intelligence in nonhuman animals for current theories about its evolution and find support for the cultural intelligence approach, which stresses the critical importance of social inputs during the ontogenetic construction of survival-relevant skills. The presence of general intelligence in nonhumans implies that modular abilities can arise in two ways, primarily through automatic development with fixed content and secondarily through learning and automatization with more variable content. The currently best-supported model, for humans and nonhuman vertebrates alike, thus construes the mind as a mix of skills based on primary and secondary modules. The relative importance of these two components is expected to vary widely among species, and we formulate tests to quantify their strength. (shrink)

Peirce is the father of semiotics. However, his theory was developed long before the developments in information theory. The codification procedures studied by the latter turn out to be crucial also for biology. At the root of both information and semiosis there are equivalence classes. In the case of biological systems, we speak of functional equivalence classes. Equivalence classes represent the grid that organism impose on biochemical processes and signals of the external or internal environment. The whole feedback circuit that (...) is built in this way allows information control. Symbolic systems represent another kind of dealing-with-information as far as they deal with the matching of our concepts with the world. (shrink)