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Author |
Hunt, G.R.; Gray, R.D. |
Title |
The crafting of hook tools by wild New Caledonian crows |
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Journal Article |
Year |
2004 |
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Proceedings of the Royal Society B: Biological Sciences |
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Proc. Roy. Soc. Lond. B Biol. Sci. |
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271 |
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S88-S90 |
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The 'crafting' of tools involves (i) selection of appropriate raw material, (ii) preparatory trimming and (iii) fine, three-dimensional sculpting. Its evolution is technologically important because it allows the open-ended development of tools. New Caledonian crows manufacture an impressive range of stick and leaf tools. We previously reported that their toolkit included hooked implements made from leafy twigs, although their manufacture had never been closely observed. We describe the manufacture of 10 hooked-twig tools by an adult crow and its dependent juvenile. To make all 10 tools, the crows carried out a relatively invariant three-step sequence of complex manipulations that involved (i) the selection of raw material, (ii) trimming and (iii) a lengthy sculpting of the hook. Hooked-twig manufacture contrasts with the lack of sculpting in the making of wooden tools by other non-humans such as chimpanzees and woodpecker finches. This fine, three-stage crafting process removes another alleged difference between humans and other animals. |
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3526 |
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Author |
Byrne, R.W. |
Title |
Culture in great apes: using intricate complexity in feeding skills to trace the evolutionary origin of human technical prowess |
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Journal Article |
Year |
2007 |
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Philosophical Transactions of the Royal Society B: Biological Sciences |
Abbreviated Journal |
Phil. Trans. Biol. Sci. |
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362 |
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1480 |
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577-585 |
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Geographical cataloguing of traits, as used in human ethnography, has led to the description of “culture” in some non-human great apes. Culture, in these terms, is detected as a pattern of local ignorance resulting from environmental constraints on knowledge transmission. However, in many cases, the geographical variations may alternatively be explained by ecology. Social transmission of information can reliably be identified in many other animal species, by experiment or distinctive patterns in distribution; but the excitement of detecting culture in great apes derives from the possibility of understanding the evolution of cumulative technological culture in humans. Given this interest, I argue that great ape research should concentrate on technically complex behaviour patterns that are ubiquitous within a local population; in these cases, a wholly non-social ontogeny is highly unlikely. From this perspective, cultural transmission has an important role in the elaborate feeding skills of all species of great ape, in conveying the “gist” or organization of skills. In contrast, social learning is unlikely to be responsible for local stylistic differences, which are apt to reflect sensitive adaptations to ecology. |
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3527 |
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Emery, N.J.; Seed, A.M.; von Bayern, A.M.P.; Clayton, N.S. |
Title |
Cognitive adaptations of social bonding in birds |
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Journal Article |
Year |
2007 |
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Philosophical Transactions of the Royal Society B: Biological Sciences |
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Phil. Trans. Biol. Sci. |
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362 |
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1480 |
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489-505 |
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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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3528 |
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Mithen, S. |
Title |
Did farming arise from a misapplication of social intelligence? |
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Journal Article |
Year |
2007 |
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Philosophical Transactions of the Royal Society B: Biological Sciences |
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Phil. Trans. Biol. Sci. |
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362 |
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1480 |
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705-718 |
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The origins of farming is the defining event of human history – the one turning point that has resulted in modern humans having a quite different type of lifestyle and cognition to all other animals and past types of humans. With the economic basis provided by farming, human individuals and societies have developed types of material culture that greatly augment powers of memory and computation, extending the human mental capacity far beyond that which the brain alone can provide. Archaeologists have long debated and discussed why people began living in settled communities and became dependent on cultivated plants and animals, which soon evolved into domesticated forms. One of the most intriguing explanations was proposed more than 20 years ago not by an archaeologist but by a psychologist: Nicholas Humphrey suggested that farming arose from the “misapplication of social intelligence”. I explore this idea in relation to recent discoveries and archaeological interpretations in the Near East, arguing that social intelligence has indeed played a key role in the origin of farming and hence the emergence of the modern world. |
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3529 |
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Mullin, M.H. |
Title |
MIRRORS AND WINDOWS: Sociocultural Studies of Human-Animal Relationships |
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1999 |
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Annual Review of Anthropology |
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28 |
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1 |
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201-224 |
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Humans' relationships with animals, increasingly the subject of controversy, have long been of interest to those whose primary aim has been the better understanding of humans' relationships with other humans. Since this topic was last reviewed here, human-animal relationships have undergone considerable reexamination, reflecting key trends in the history of social analysis, including concerns with connections between anthropology and colonialism and with the construction of race, class, and gender identities. There have been many attempts to integrate structuralist or symbolic approaches with those focused on environmental, political, and economic dimensions. Human-animal relationships are now much more likely to be considered in dynamic terms, and consequently, there has been much interdisciplinary exchange between anthropologists and historians. Some research directly engages moral and political concerns about animals, but it is likely that sociocultural research on human-animal relationships will continue to be as much, if not more, about humans. |
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3534 |
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Author |
Premack, D. |
Title |
Animal Cognition |
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1983 |
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Annual Review of Psychology |
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34 |
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1 |
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351-362 |
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3535 |
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Timberlake, W. |
Title |
Animal Behavior: A Continuing Synthesis |
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1993 |
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Annual Review of Psychology |
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44 |
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1 |
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675-706 |
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Spear, N.E.; Miller, J.S.; Jagielo, J.A. |
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Animal Memory and Learning |
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1990 |
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Annual Review of Psychology |
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41 |
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169-211 |
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3538 |
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Dickinson, A.; Mackintosh, N.J. |
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Classical Conditioning in Animals |
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1978 |
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Annual Review of Psychology |
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29 |
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587-612 |
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3539 |
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Rescorla, R.A.; Holland, P.C. |
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Behavioral Studies of Associative Learning in Animals |
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1982 |
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Annual Review of Psychology |
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33 |
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265-308 |
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