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Author |
Carpenter, M.; Nagell, K.; Tomasello, M.; Butterworth, G.; Moore, C. |
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Title |
Social Cognition, Joint Attention, and Communicative Competence from 9 to 15 Months of Age |
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Journal Article |
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1998 |
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Monographs of the Society for Research in Child Development |
Abbreviated Journal |
Monogr Soc Res Child Dev |
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63 |
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4 |
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1-174 |
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At around 1 year of age, human infants display a number of new behaviors that seem to indicate a newly emerging understanding of other persons as intentional beings whose attention to outside objects may be shared, followed into, and directed in various ways. These behaviors have mostly been studied separately. In the current study, we investigated the most important of these behaviors together as they emerged in a single group of 24 infants between 9 and 15 months of age. At each of seven monthly visits, we measured joint attentional engagement, gaze and point following, imitation of two different kinds of actions on objects, imperative and declarative gestures, and comprehension and production of language. We also measured several nonsocial-cognitive skills as a point of comparison. We report two studies. The focus of the first study was the initial emergence of infants' social-cognitive skills and how these skills are related to one another developmentally. We found a reliable pattern of emergence: Infants progressed from sharing to following to directing others' attention and behavior. The nonsocial skills did not emerge predictably in this developmental sequence. Furthermore, correlational analyses showed that the ages of emergence of all pairs of the social-cognitive skills or their components were interrelated. The focus of the second study was the social interaction of infants and their mothers, especially with regard to their skills of joint attentional engagement (including mothers' use of language to follow into or direct infants' attention) and how these skills related to infants' early communicative competence. Our measures of communicative competence included not only language production, as in previous studies, but also language comprehension and gesture production. It was found that two measures-the amount of time infants spent in joint engagement with their mothers and the degree to which mothers used language that followed into their infant's focus of attention-predicted infants' earliest skills of gestural and linguistic communication. Results of the two studies are discussed in terms of their implications for theories of social-cognitive development, for theories of language development, and for theories of the process by means of which human children become fully participating members of the cultural activities and processes into which they are born. |
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refbase @ user @ |
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3997 |
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Byrnl, R.W.; Tomasello, M. |
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Title |
Do rats ape? |
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Journal Article |
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Year |
1995 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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50 |
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5 |
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1417-1420 |
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refbase @ user @ |
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589 |
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Hare, B.; Brown, M.; Williamson, C.; Tomasello, M. |
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Title |
The domestication of social cognition in dogs |
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Journal Article |
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Year |
2002 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
298 |
Issue |
5598 |
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1634-1636 |
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Animals; *Animals, Domestic; *Behavior, Animal; *Cognition; *Cues; *Dogs; Food; Humans; Memory; Pan troglodytes; *Social Behavior; Species Specificity; Vision; Wolves |
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Dogs are more skillful than great apes at a number of tasks in which they must read human communicative signals indicating the location of hidden food. In this study, we found that wolves who were raised by humans do not show these same skills, whereas domestic dog puppies only a few weeks old, even those that have had little human contact, do show these skills. These findings suggest that during the process of domestication, dogs have been selected for a set of social-cognitive abilities that enable them to communicate with humans in unique ways. |
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Department of Anthropology, Harvard University, Cambridge, MA 02138, USA. bhare@fas.harvard.edu |
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1095-9203 |
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PMID:12446914 |
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refbase @ user @ |
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595 |
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Warneken, F.; Tomasello, M. |
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Title |
Altruistic Helping in Human Infants and Young Chimpanzees |
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Journal Article |
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2006 |
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Science |
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311 |
Issue |
5765 |
Pages |
1301-1303 |
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Human beings routinely help others to achieve their goals, even when the helper receives no immediate benefit and the person helped is a stranger. Such altruistic behaviors (toward non-kin) are extremely rare evolutionarily, with some theorists even proposing that they are uniquely human. Here we show that human children as young as 18 months of age (prelinguistic or just-linguistic) quite readily help others to achieve their goals in a variety of different situations. This requires both an understanding of others' goals and an altruistic motivation to help. In addition, we demonstrate similar though less robust skills and motivations in three young chimpanzees. |
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Equine Behaviour @ team @ |
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5607 |
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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 |
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Year |
2007 |
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Science |
Abbreviated Journal |
Science |
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317 |
Issue |
5843 |
Pages |
1360-1366 |
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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. |
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Title |
Humans Have Evolved Specialized Skills of Social Cognition: The Cultural Intelligence Hypothesis |
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Journal Article |
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2007 |
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Science |
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Science |
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317 |
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5843 |
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1360-1366 |
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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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Warneken, F.; Hare, B.; Melis, A.P.; Hanus, D.; Tomasello, M. |
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Title |
Spontaneous Altruism by Chimpanzees and Young Children |
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2007 |
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PLoS Biol |
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PLoS Biol |
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5 |
Issue |
7 |
Pages |
e184 EP - |
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<p>Experimental evidence reveals that chimpanzees will help other unrelated humans and conspecifics without a reward, showing that they share crucial aspects of altruism with humans.</p> |
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Public Library of Science |
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Equine Behaviour @ team @ |
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5609 |
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Mersmann, D.; Tomasello, M.; Call, J.; Kaminski, J.; Taborsky, M. |
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Title |
Simple Mechanisms Can Explain Social Learning in Domestic Dogs (Canis familiaris) |
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2011 |
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Ethology |
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Ethology |
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117 |
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8 |
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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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Author |
Hare, B.; Tomasello, M. |
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Title |
Human-like social skills in dogs? |
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Journal Article |
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2005 |
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Trends in Cognitive Sciences |
Abbreviated Journal |
Trends. Cognit. Sci. |
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9 |
Issue |
9 |
Pages |
439-444 |
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*Animal Communication; Animals; *Behavior, Animal; Cognition/*physiology; Dogs; *Evolution; Humans; *Social Behavior |
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Domestic dogs are unusually skilled at reading human social and communicative behavior--even more so than our nearest primate relatives. For example, they use human social and communicative behavior (e.g. a pointing gesture) to find hidden food, and they know what the human can and cannot see in various situations. Recent comparisons between canid species suggest that these unusual social skills have a heritable component and initially evolved during domestication as a result of selection on systems mediating fear and aggression towards humans. Differences in chimpanzee and human temperament suggest that a similar process may have been an important catalyst leading to the evolution of unusual social skills in our own species. The study of convergent evolution provides an exciting opportunity to gain further insights into the evolutionary processes leading to human-like forms of cooperation and communication. |
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Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany. hare@eva.mpg.de |
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1364-6613 |
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PMID:16061417 |
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refbase @ user @ |
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546 |
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Author |
Warneken, F.; Tomasello, M. |
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Title |
Varieties of altruism in children and chimpanzees |
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2009 |
Publication |
Trends in cognitive sciences |
Abbreviated Journal |
Trends Cogn Sci |
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13 |
Issue |
9 |
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397-402 |
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Recent empirical research has shed new light on the perennial question of human altruism. A number of recent studies suggest that from very early in ontogeny young children have a biological predisposition to help others achieve their goals, to share resources with others and to inform others of things helpfully. Humans nearest primate relatives, such as chimpanzees, engage in some but not all of these behaviors: they help others instrumentally, but they are not so inclined to share resources altruistically and they do not inform others of things helpfully. The evolutionary roots of human altruism thus appear to be much more complex than previously supposed. |
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Elsevier Science, |
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1364-6613 |
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Equine Behaviour @ team @ S1364-6613(09)00149-1 DOI - 10.1016/j.tics.2009.06.008 |
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5608 |
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