The question of whether chimpanzees, like humans, reason about unobservable mental states remains highly controversial. On one account, chimpanzees are seen as possessing a psychological system for social cognition that represents and reasons about behaviors alone. A competing account allows that the chimpanzee's social cognition system additionally construes the behaviors it represents in terms of mental states. Because the range of behaviors that each of the two systems can generate is not currently known, and because the latter system depends upon (...) the former, determining the presence of this latter system in chimpanzees is a far more difficult task than has been assumed. We call for recognition of this problem, and a shift from experimental paradigms that cannot resolve this question, to ones that might allow researchers to intelligently determine when it is necessary to postulate the presence of a system which reasons about both behavior and mental states. (shrink)

ABSTRACTResearchers have suggested that religious individuals engage primarily in intuitive over analytic processing. We investigated a connection between specific aspects of religiosity and the attribution of causation to social and physical events. College undergraduates completed measures of religiosity online and were asked to determine the causes of events that varied in type, outcome, and likelihood, as well as the personality characteristics of the protagonist. Individuals with greater intrinsic religious orientation, fundamentalism, who viewed God as loving, who were more dogmatic, and (...) had an external locus of control were more likely to attribute supernatural phenomena to events compared to those lower in those traits. Supernatural causation was invoked more often when the character of the protagonist and the outcome of social event matched in valence than when they did not match. Individuals low and high in religiosity.. (shrink)

The effect of oxytocin on cognitive bias was investigated in rats in a modified conditioned place preference (CPP) paradigm. Fifteen male rats were trained to discriminate between two different cue combinations, one paired with palatable foods (reward training), and the other paired with unpalatable food (aversive training). Next, their reactions to two ambiguous cue combinations were evaluated and their latency to contact the goal pot recorded. Rats were injected with either oxytocin (OT) or saline with the prediction that rats administered (...) oxytocin would display a shorter average latency to approach on ambiguous trials. There was no significant difference between latencies to approach on ambiguous trials compared to reward trials, but the rats were significantly slower on the aversive compared to the ambiguous conditions. Oxytocin did not affect approach time; however, it was unclear, after follow-up testing, whether the OT doses tested were sufficient to produce the desired effects on cognitive bias. Future research should consider this possibility. (shrink)

This encyclopedia, reflecting one of the fastest growing fields in evolutionary psychology, is a comprehensive examination of the key areas in animal cognition. It will serve as a complementary resource to the handbooks and journals that have emerged in the last decade on this topic, and will be a useful resource for student and researcher alike. With comprehensive coverage of this field, key concepts will be explored. These include social cognition, prey and predator detection, habitat selection, mating and parenting, learning (...) and perception. Attention is also given to animal-human co-evolution and interaction, as well as metacognition and consciousness. Entries are tailored to the importance of the individual topic and the amount of empirical evidence that is available. All entries are under the purview of acknowledged experts in the field. (shrink)