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Author Clayton, N.S.
Title COGNITION: An Open Sandwich or an Open Question? Type Journal Article
Year 2004 Publication Science Abbreviated Journal Science
Volume 305 Issue 5682 Pages 344-
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Notes 10.1126/science.1099512 Approved no
Call Number Equine Behaviour @ team @ Serial 2955
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Author Emery, N.J.; Seed, A.M.; von Bayern, A.M.P.; Clayton, N.S.
Title Cognitive adaptations of social bonding in birds Type Journal Article
Year 2007 Publication Philosophical Transactions of the Royal Society B: Biological Sciences Abbreviated Journal Phil. Trans. Biol. Sci.
Volume 362 Issue 1480 Pages 489-505
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Abstract The “social intelligence hypothesis” was originally conceived to explain how primates may have evolved their superior intellect and large brains when compared with other animals. Although some birds such as corvids may be intellectually comparable to apes, the same relationship between sociality and brain size seen in primates has not been found for birds, possibly suggesting a role for other non-social factors. But bird sociality is different from primate sociality. Most monkeys and apes form stable groups, whereas most birds are monogamous, and only form large flocks outside of the breeding season. Some birds form lifelong pair bonds and these species tend to have the largest brains relative to body size. Some of these species are known for their intellectual abilities (e.g. corvids and parrots), while others are not (e.g. geese and albatrosses). Although socio-ecological factors may explain some of the differences in brain size and intelligence between corvids/parrots and geese/albatrosses, we predict that the type and quality of the bonded relationship is also critical. Indeed, we present empirical evidence that rook and jackdaw partnerships resemble primate and dolphin alliances. Although social interactions within a pair may seem simple on the surface, we argue that cognition may play an important role in the maintenance of long-term relationships, something we name as “relationship intelligence”.
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Call Number refbase @ user @ Serial 3528
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Author Seed, A.M.; Clayton, N.S.; Emery, N.J.
Title Postconflict third-party affiliation in rooks, Corvus frugilegus Type Journal Article
Year 2007 Publication Current biology : CB Abbreviated Journal Curr Biol
Volume 17 Issue 2 Pages 152-158
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Abstract Conflict features in the lives of many animal species and induces social stress mediated by glucocorticoid hormones [1]. Postconflict affiliation, between former opponents (reconciliation) or between former opponents and a bystander (third-party affiliation), has been suggested as a behavioral mechanism for reducing such stress [2], but has been studied almost exclusively in primates [3]. As with many primates, several bird species live in social groups and form affiliative relationships [4]. Do these distantly related animals also use affiliative behavior to offset the costs of conflict? We studied postconflict affiliation in a captive group of rooks. Unlike polygamous primates, monogamous rooks did not reconcile with former opponents. However, we found clear evidence of third-party affiliation after conflicts. Both initiators and targets of aggression engaged in third-party affiliation with a social partner and employed a specific behavior, bill twining, during the postconflict period. Both former aggressors and uninvolved third parties initiated affiliative contacts. Despite the long history of evolutionary divergence, the pattern of third-party affiliation in rooks is strikingly similar to that observed in tolerant primate species. Furthermore, the absence of reconciliation in rooks makes sense in light of the species differences in social systems.
Address Department of Experimental Psychology, University of Cambridge, Cambridge CB2 3EB, United Kingdom
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ISSN 0960-9822 ISBN Medium
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Notes PMID:17240341 Approved no
Call Number refbase @ user @ Serial 534
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Author Emery, N.J.; Clayton, N.S.
Title The Mentality of Crows: Convergent Evolution of Intelligence in Corvids and Apes Type Journal Article
Year 2004 Publication Science Abbreviated Journal Science
Volume 306 Issue 5703 Pages 1903-1907
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Abstract Discussions of the evolution of intelligence have focused on monkeys and apes because of their close evolutionary relationship to humans. Other large-brained social animals, such as corvids, also understand their physical and social worlds. Here we review recent studies of tool manufacture, mental time travel, and social cognition in corvids, and suggest that complex cognition depends on a “tool kit” consisting of causal reasoning, flexibility, imagination, and prospection. Because corvids and apes share these cognitive tools, we argue that complex cognitive abilities evolved multiple times in distantly related species with vastly different brain structures in order to solve similar socioecological problems.
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Notes 10.1126/science.1098410 Approved no
Call Number Equine Behaviour @ team @ Serial 2959
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Author Clayton, N.S.; Dickinson, A.
Title Episodic-like memory during cache recovery by scrub jays Type Journal Article
Year 1998 Publication Abbreviated Journal Nature
Volume 395 Issue 6699 Pages 272-274
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Abstract The recollection of past experiences allows us to recall what a particular event was, and where and when it occurred1,2, a form of memory that is thought to be unique to humans3. It is known, however, that food-storing birds remember the spatial location4, 5, 6 and contents6, 7, 8, 9 of their caches. Furthermore, food-storing animals adapt their caching and recovery strategies to the perishability of food stores10, 11, 12, 13, which suggests that they are sensitive to temporal factors. Here we show that scrub jays (Aphelocoma coerulescens) remember 'when' food items are stored by allowing them to recover perishable 'wax worms' (wax-moth larvae) and non-perishable peanuts which they had previously cached in visuospatially distinct sites. Jays searched preferentially for fresh wax worms, their favoured food, when allowed to recover them shortly after caching. However, they rapidly learned to avoid searching for worms after a longer interval during which the worms had decayed. The recovery preference of jays demonstrates memory of where and when particular food items were cached, thereby fulfilling the behavioural criteria for episodic-like memory in non-human animals.
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ISSN 0028-0836 ISBN Medium
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Notes 10.1038/26216 Approved no
Call Number Equine Behaviour @ team @ Serial 4788
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Author Van Horik, J.; Clayton, N.; Emery, N.
Title Convergent evolution of cognition in Corvids, Apes and other animals Type Book Chapter
Year 2012 Publication Oxford Handbook of Comparative Evolutionary Psychology Abbreviated Journal
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Publisher Oxford University Press Place of Publication New York Editor Vonk, J.; Shackelford, T.
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Call Number Equine Behaviour @ team @ Van Horik2012 Serial 6284
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Author Emery, N.J.; Clayton, N.S.; Frith, C.D.
Title Introduction. Social intelligence: from brain to culture Type Journal Article
Year 2007 Publication Philos Trans R Soc B Abbreviated Journal Philos Trans R Soc B
Volume 362 Issue Pages
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Call Number Equine Behaviour @ team @ Emery2007 Serial 6302
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Author Van Horik, J.; Clayton, N.; Emery, N.
Title Oxford Handbook of Comparative Evolutionary Psychology Type Book Whole
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Publisher Oxford University Press Place of Publication New York Editor Vonk, J.; Shackelford, T.
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Call Number Equine Behaviour @ team @ Serial 6403
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Author Amodio, P.; Boeckle, M.; Schnell, A.K.; Ostojic, L.; Fiorito, G.; Clayton, N.S.
Title Grow Smart and Die Young: Why Did Cephalopods Evolve Intelligence? Type Journal Article
Year 2018 Publication Trends in Ecology & Evolution Abbreviated Journal Trends. Ecol. Evol.
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Abstract Intelligence in large-brained vertebrates might have evolved through independent, yet similar processes based on comparable socioecological pressures and slow life histories. This convergent evolutionary route, however, cannot explain why cephalopods developed large brains and flexible behavioural repertoires: cephalopods have fast life histories and live in simple social environments. Here, we suggest that the loss of the external shell in cephalopods (i) caused a dramatic increase in predatory pressure, which in turn prevented the emergence of slow life histories, and (ii) allowed the exploitation of novel challenging niches, thus favouring the emergence of intelligence. By highlighting convergent and divergent aspects between cephalopods and large-brained vertebrates we illustrate how the evolution of intelligence might not be constrained to a single evolutionary route.
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Publisher Elsevier Place of Publication Editor
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ISSN 0169-5347 ISBN Medium
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Notes doi: 10.1016/j.tree.2018.10.010 Approved no
Call Number Equine Behaviour @ team @ Serial 6508
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Author Tebbich, S.; Seed, A.M.; Emery, N.J.; Clayton, N.S.
Title Non-tool-using rooks, Corvus frugilegus, solve the trap-tube problem Type Journal Article
Year 2007 Publication Animal Cognition Abbreviated Journal Anim. Cogn.
Volume 10 Issue 2 Pages 225-231
Keywords (up) Animals; Behavior, Animal/*physiology; Cognition/*physiology; Crows/*physiology; Female; Male; Problem Solving/*physiology
Abstract The trap-tube problem is used to assess whether an individual is able to foresee the outcome of its actions. To solve the task, an animal must use a tool to push a piece of food out of a tube, which has a trap along its length. An animal may learn to avoid the trap through a rule based on associative processes, e.g. using the distance of trap or food as a cue, or by understanding relations between cause and effect. This task has been used to test physical cognition in a number of tool-using species, but never a non-tool-user. We developed an experimental design that enabled us to test non-tool-using rooks, Corvus frugilegus. Our modification of the task removed the cognitive requirements of active tool use but still allowed us to test whether rooks can solve the trap-tube problem, and if so how. Additionally, we developed two new control tasks to determine whether rooks were able to transfer knowledge to similar, but novel problems, thus revealing more about the mechanisms involved in solving the task. We found that three out of seven rooks solved the modified trap-tube problem task, showing that the ability to solve the trap-tube problem is not restricted to tool-using animals. We found no evidence that the birds solved the task using an understanding of its causal properties, given that none of the birds passed the novel transfer tasks.
Address Department of Experimental Psychology, University of Cambridge, Cambridge, CB2 3EB, UK. st281@cam.ac.uk
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ISSN 1435-9448 ISBN Medium
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Notes PMID:17171360 Approved no
Call Number Equine Behaviour @ team @ Serial 2429
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