| Records |
Author  |
Hare, B.; Rosati, A.; Kaminski, J.; Bräuer, J.; Call, J.; Tomasello, M. |
| Title |
The domestication hypothesis for dogs' skills with human communication: a response to Udell et al. (2008) and Wynne et al. (2008) |
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Journal Article |
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2010 |
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Anim Behav |
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79 |
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Equine Behaviour @ team @ Hare2010 |
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6241 |
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Herrmann, E.; Call, J.; Hernandez-Lloreda, M.V.; Hare, B.; Tomasello, M. |
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online material |
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Journal Article |
| Year |
2007 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
317 |
Issue |
5843 |
Pages |
1360-1366 |
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| Abstract |
Humans have many cognitive skills not possessed by their nearest primate relatives. The cultural intelligence hypothesis argues that this is mainly due to a species-specific set of social-cognitive skills, emerging early in ontogeny, for participating and exchanging knowledge in cultural groups. We tested this hypothesis by giving a comprehensive battery of cognitive tests to large numbers of two of humans' closest primate relatives, chimpanzees and orangutans, as well as to 2.5-year-old human children before literacy and schooling. Supporting the cultural intelligence hypothesis and contradicting the hypothesis that humans simply have more “general intelligence,” we found that the children and chimpanzees had very similar cognitive skills for dealing with the physical world but that the children had more sophisticated cognitive skills than either of the ape species for dealing with the social world. |
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Equine Behaviour @ team @ |
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4244 |
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Herrmann, E.; Call, J.; Hernandez-Lloreda, M.V.; Hare, B.; Tomasello, M. |
| Title |
Humans Have Evolved Specialized Skills of Social Cognition: The Cultural Intelligence Hypothesis |
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Journal Article |
| Year |
2007 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
317 |
Issue |
5843 |
Pages |
1360-1366 |
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| Abstract |
Humans have many cognitive skills not possessed by their nearest primate relatives. The cultural intelligence hypothesis argues that this is mainly due to a species-specific set of social-cognitive skills, emerging early in ontogeny, for participating and exchanging knowledge in cultural groups. We tested this hypothesis by giving a comprehensive battery of cognitive tests to large numbers of two of humans' closest primate relatives, chimpanzees and orangutans, as well as to 2.5-year-old human children before literacy and schooling. Supporting the cultural intelligence hypothesis and contradicting the hypothesis that humans simply have more “general intelligence,” we found that the children and chimpanzees had very similar cognitive skills for dealing with the physical world but that the children had more sophisticated cognitive skills than either of the ape species for dealing with the social world. |
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10.1126/science.1146282 |
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Equine Behaviour @ team @ |
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4245 |
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Kaminski, J.; Call, J.; Fischer, J. |
| Title |
Word Learning in a Domestic Dog: Evidence for “Fast Mapping” |
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Journal Article |
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2004 |
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Science |
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Science |
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304 |
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5677 |
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1682-1683 |
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During speech acquisition, children form quick and rough hypotheses about the meaning of a new word after only a single exposure--a process dubbed “fast mapping.” Here we provide evidence that a border collie, Rico, is able to fast map. Rico knew the labels of over 200 different items. He inferred the names of novel items by exclusion learning and correctly retrieved those items right away as well as 4 weeks after the initial exposure. Fast mapping thus appears to be mediated by general learning and memory mechanisms also found in other animals and not by a language acquisition device that is special to humans. |
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10.1126/science.1097859 |
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Equine Behaviour @ team @ |
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4678 |
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Kaminski, J.; Call, J.; Tomasello, M. |
| Title |
Goats' behaviour in a competitive food paradigm: Evidence for perspective taking? |
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Journal Article |
| Year |
2006 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
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143 |
Issue |
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Pages |
1341-1356 |
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SOCIAL COGNITION; GOATS; VISUAL PERSPECTIVE TAKING; COMPARATIVE COGNITION |
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Many mammalian species are highly social, creating intra-group competition for such things as food and mates. Recent research with nonhuman primates indicates that in competitive situations individuals know what other individuals can and cannot see, and they use this knowledge to their advantage in various ways. In the current study, we extended these findings to a non-primate species, the domestic goat, using the conspecific competition paradigm developed by Hare et al. (2000). Like chimpanzees and some other nonhuman primates, goats live in fission-fusion societies, form coalitions and alliances, and are known to reconcile after fights. In the current study, a dominant and a subordinate individual competed for food, but in some cases the subordinate could see things that the dominant could not. In the condition where dominants could only see one piece of food but subordinates could see both, subordinates' preferences depended on whether they received aggression from the dominant animal during the experiment. Subjects who received aggression preferred the hidden over the visible piece of food, whereas subjects who never received aggression significantly preferred the visible piece. By using this strategy, goats who had not received aggression got significantly more food than the other goats. Such complex social interactions may be supported by cognitive mechanisms similar to those of chimpanzees. We discuss these results in the context of current issues in mammalian cognition and socio-ecology. |
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refbase @ user @ |
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3430 |
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Kaminski, J.; Call, J.; Tomasello, M. |
| Title |
Body orientation and face orientation: two factors controlling apes' behavior from humans |
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Journal Article |
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2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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7 |
Issue |
4 |
Pages |
216-223 |
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Animals; *Attention; *Behavior, Animal; Cognition; *Concept Formation; Face; Facial Expression; Female; Fixation, Ocular; Hominidae/*psychology; Humans; Male; *Nonverbal Communication; *Orientation; Pan paniscus/psychology; Pan troglodytes/psychology; Pongo pygmaeus/psychology; *Posture; Social Perception; Species Specificity |
| Abstract |
A number of animal species have evolved the cognitive ability to detect when they are being watched by other individuals. Precisely what kind of information they use to make this determination is unknown. There is particular controversy in the case of the great apes because different studies report conflicting results. In experiment 1, we presented chimpanzees, orangutans, and bonobos with a situation in which they had to request food from a human observer who was in one of various attentional states. She either stared at the ape, faced the ape with her eyes closed, sat with her back towards the ape, or left the room. In experiment 2, we systematically crossed the observer's body and face orientation so that the observer could have her body and/or face oriented either towards or away from the subject. Results indicated that apes produced more behaviors when they were being watched. They did this not only on the basis of whether they could see the experimenter as a whole, but they were sensitive to her body and face orientation separately. These results suggest that body and face orientation encode two different types of information. Whereas face orientation encodes the observer's perceptual access, body orientation encodes the observer's disposition to transfer food. In contrast to the results on body and face orientation, only two of the tested subjects responded to the state of the observer's eyes. |
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Max Planck Institute for Evolutionary Anthropology, Deutscher Plaz 6, 04103 Leipzig, Germany. kaminski@eva.mpg.de |
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English |
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1435-9448 |
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PMID:15034765 |
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no |
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Equine Behaviour @ team @ |
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2538 |
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Kaminski, J.; Riedel, J.; Call, J.; Tomasello, M. |
| Title |
Domestic goats, Capra hircus, follow gaze direction and use social cues in an object choice task |
Type |
Journal Article |
| Year |
2005 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
69 |
Issue |
1 |
Pages |
11-18 |
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Gaze following is a basic social cognitive skill with many potential benefits for animals that live in social groups. At least five primate species are known to follow the gaze of conspecifics, but there have been no studies on gaze following in other mammals. We investigated whether domestic goats can use the gaze direction of a conspecific as a cue to find food. They were able to do this, at a level comparable to that of primates. In a second experiment, we tested goats' ability to use gaze and other communicative cues given by a human in a so-called object choice situation. An experimenter hid food out of sight of the subject under one of two cups. After baiting the cup the experimenter indicated the location of the food to the subject by using different cues. The goats used communicative cues (touching and pointing) but not gaze by itself. Since domestic dogs are very skilled in this task, whereas wolves are not, one hypothesis is that the use of communicative cues in the object choice task is a side-effect of domestication. |
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refbase @ user @ |
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542 |
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MacLean, E.; Matthews, L.; Hare, B.; Nunn, C.; Anderson, R.; Aureli, F.; Brannon, E.; Call, J.; Drea, C.; Emery, N.; Haun, D.; Herrmann, E.; Jacobs, L.; Platt, M.; Rosati, A.; Sandel, A.; Schroepfer, K.; Seed, A.; Tan, J.; van Schaik, C.; Wobber, V. |
| Title |
How does cognition evolve? Phylogenetic comparative psychology |
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Journal Article |
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2012 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
15 |
Issue |
2 |
Pages |
223-238 |
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Biomedizin & Life Sciences |
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Now more than ever animal studies have the potential to test hypotheses regarding how cognition evolves. Comparative psychologists have developed new techniques to probe the cognitive mechanisms underlying animal behavior, and they have become increasingly skillful at adapting methodologies to test multiple species. Meanwhile, evolutionary biologists have generated quantitative approaches to investigate the phylogenetic distribution and function of phenotypic traits, including cognition. In particular, phylogenetic methods can quantitatively (1) test whether specific cognitive abilities are correlated with life history (e.g., lifespan), morphology (e.g., brain size), or socio-ecological variables (e.g., social system), (2) measure how strongly phylogenetic relatedness predicts the distribution of cognitive skills across species, and (3) estimate the ancestral state of a given cognitive trait using measures of cognitive performance from extant species. Phylogenetic methods can also be used to guide the selection of species comparisons that offer the strongest tests of a priori predictions of cognitive evolutionary hypotheses (i.e., phylogenetic targeting). Here, we explain how an integration of comparative psychology and evolutionary biology will answer a host of questions regarding the phylogenetic distribution and history of cognitive traits, as well as the evolutionary processes that drove their evolution. |
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Springer Berlin / Heidelberg |
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1435-9448 |
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Equine Behaviour @ team @ |
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5604 |
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Melis, A.P.; Warneken, F.; Jensen, K.; Schneider, A.-C.; Call, J.; Tomasello, M. |
| Title |
Chimpanzees help conspecifics obtain food and non-food items |
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Journal Article |
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2011 |
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Proceedings of the Royal Society B: Biological Sciences |
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278 |
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1710 |
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1405-1413 |
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Chimpanzees (Pan troglodytes) sometimes help both humans and conspecifics in experimental situations in which immediate selfish benefits can be ruled out. However, in several experiments, chimpanzees have not provided food to a conspecific even when it would cost them nothing, leading to the hypothesis that prosociality in the food-provisioning context is a derived trait in humans. Here, we show that chimpanzees help conspecifics obtain both food and non-food items—given that the donor cannot get the food herself. Furthermore, we show that the key factor eliciting chimpanzees' targeted helping is the recipients' attempts to either get the food or get the attention of the potential donor. The current findings add to the accumulating body of evidence that humans and chimpanzees share the motivation and skills necessary to help others in situations in which they cannot selfishly benefit. Humans, however, show prosocial motives more readily and in a wider range of contexts. |
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Equine Behaviour @ team @ |
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5630 |
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Mersmann, D.; Tomasello, M.; Call, J.; Kaminski, J.; Taborsky, M. |
| Title |
Simple Mechanisms Can Explain Social Learning in Domestic Dogs (Canis familiaris) |
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Journal Article |
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2011 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
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117 |
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8 |
Pages |
675-690 |
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Abstract Recent studies have suggested that domestic dogs (Canis familiaris) engage in highly complex forms of social learning. Here, we critically assess the potential mechanisms underlying social learning in dogs using two problem-solving tasks. In a classical detour task, the test dogs benefited from observing a demonstrator walking around a fence to obtain a reward. However, even inexperienced dogs did not show a preference for passing the fence at the same end as the demonstrator. Furthermore, dogs did not need to observe a complete demonstration by a human demonstrator to pass the task. Instead, they were just as successful in solving the problem after seeing a partial demonstration by an object passing by at the end of the fence. In contrast to earlier findings, our results suggest that stimulus enhancement (or affordance learning) might be a powerful social learning mechanism used by dogs to solve such detour problems. In the second task, we examined whether naïve dogs copy actions to solve an instrumental problem. After controlling for stimulus enhancement and other forms of social influence (e.g. social facilitation and observational conditioning), we found that dogs’ problem solving was not influenced by witnessing a skilful demonstrator (either an unknown human, a conspecific or the dog’s owner). Together, these results add to evidence suggesting that social learning may often be explained by relatively simple (but powerful) mechanisms. |
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Blackwell Publishing Ltd |
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1439-0310 |
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Equine Behaviour @ team @ |
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5409 |
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