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Department of Developmental and Comparative Psychology

Max Planck Institute for Evolutionary Anthropology

Deutscher Platz 6
04103 Leipzig

phone: +49 341 3550 - 400

e-mail: zeidler@[>>> Please remove the brackets! <<<]eva.mpg.de

The Ontogeny of Human Social Cognition

This group investigates basic processes of collaboration, communication, joint attention, imitation, normativity, and social cognition in human infants and young children. The main focus of the group is currently on children’s participation in various types of interactions involving shared intentionality. Related to this is a continuing focus on infants’ understanding of others’ intentional states – their ‘theory of mind’.

Suggested readings

Tomasello, M., & Carpenter, M. (2007). Shared intentionality. Developmental Science, 10(1), 121-125.
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Tomasello, M., Carpenter, M., Call, J., Behne, T., & Moll, H. (2005). Understanding and sharing intentions: The origins of cultural cognition. Behavioral and Brain Sciences, 28(5), 675-691.
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Collaboration

After having established that 1-year-old infants (unlike apes) engage in collaborative activities structured by joint goals, we currently are investigating children’s understanding of these activities in a more fine-grained way. For example, recently we have studied children’s reactions to different types of interruptions in the collaborative activity, and we have measured how children share rewards with their partner and resolve conflicts and coordination problems in collaborative interactions. In addition, we have looked at young children’s source-monitoring errors in collaborative vs. non-collaborative activities, and children’s understanding of the commitments and obligations engendered by collaborative activities.

Suggested readings

Carpenter, M. (2009). Just how joint is joint action in infancy? Topics in Cognitive Science, 1(2), 380-392.
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Warneken, F., Chen, F., & Tomasello, M. (2006). Cooperative activities in young children and chimpanzees. Child Development, 77(3), 640-663.
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Wyman, E., & Tomasello, M. (2007). The ontogenetic origins of human cooperation. In R. I. M. Dunbar & Louise Barrett (Ed.), Oxford Handbook of Evolutionary Psychology (pp. 227-236). Oxford: Oxford University Press.
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Helping

Similarly, after showing that 1-year-olds altruistically help others, we are further investigating the conditions under which infants help. In recent studies, for example, we have investigated the effects of the rewards infants receive for helping and the presence or absence of maternal encouragement. We have also investigated whom young children are likely to help, showing that early prosocial behavior is mediated by the needy other’s circumstances and moral behaviors.

Suggested readings

Over, H., & Carpenter, M. (2009). Eighteen-Month-Old Infants Show Increased Helping Following Priming With Affiliation. Psychological Science, 20(10), 1189-1193.
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Warneken, F., & Tomasello, M. (2006). Altruistic helping in human infants and young chimpanzees. Science, 311, 1301-1303.
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Warneken, F., & Tomasello, M. (2007). Helping and cooperation at 14 months of age. Infancy, 11(3), 271-294.
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Warneken, F., & Tomasello, M. (2009). Varieties of altruism in children and chimpanzees. Trends in Cognitive Sciences, 13(9), 397-402.
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Prelinguistic Communication

Communication is a collaborative activity and we are finding some quite sophisticated abilities already in preverbal, 1-year-old infants. For example, infants (unlike apes) use common ground to interpret others’ pointing gestures (including gestures to third parties), and also produce pointing gestures differently depending on the experience they have shared with others. Slightly older children interpret others’ requests cooperatively, and cooperatively repair their own requests differently depending on the reason their communication failed. Further work on gestural communication includes a number of studies on 12-month-old infants’ pointing. We have shown that infants point for a variety of motives, including the prosocial motives of sharing attention and interest with others (so-called ‘declarative’ pointing) and helping others by informing. In particular, we have shown that infants point differently for knowledgeable and ignorant adults and adults who are currently attending versus not attending. Infants (unlike chimpanzees) can even point to communicate about absent referents. We are also studying the development of pointing (including relations between comprehension and production of pointing) and young children’s (and apes’) ability to comprehend and produce iconic gestures.

Suggested readings

Tomasello, M., Carpenter, M., & Liszkowski, U. (2007). A New Look at Infant Pointing. Child Development, 78(3), 705-722.
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Tomasello, M. (2008). Origins of Human Communication. Cambridge: MIT Press.
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Normativity

In a series of studies, we have demonstrated that young children understand the intentional and normative structure of joint pretend games, and even can switch the assignment of a pretend status to an object as a function of specific persons and contexts. Young children also learn games normatively and protest when other agents violate the rules of the games. We are also investigating young children’s normative understanding of possession and ownership. And we are looking at children's internalization of social norms as evidenced by their comprehension of the guilt reactions of others.

Suggested readings

Rakoczy, H. (2008). Taking Fiction Seriously: Young Children Understand the Normative Structure of Joint Pretence Games. Developmental Psychology, 44(4), 1195-1201.
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Rakoczy, H., Warneken, F., & Tomasello, M. (2008). The Sources of Normativity: Young Children's Awareness of the Normative Structure of Games. Developmental Psychology, 44(3), 875-881.
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Wyman, E., Rakoczy, H., & Tomasello, M. (2009). Normativity and context in young children's pretend play. Cognitive Development, 24(2), 146-155.
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Imitation

Young children are thought to copy others both to learn from them and to affiliate with them socially, and we are investigating both types of imitation. For example, we have shown that young children selectively learn from adults versus peers and from reliable versus unreliable adults, and that they use an understanding of others’ goals and intentions when deciding what to copy from a demonstration. With regard to the social function of imitation, we have found relations between mimicry and helping and between affiliation to the group and imitation. We are also investigating affiliation in young children using other methods.

Suggested readings

Over, H., & Carpenter, M. (2009). Priming third-party ostracism increases affiliative imitation in children. Developmental Science, 12(3), F1-F8.
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Rakoczy, H., Warneken, F., & Tomasello, M. (2009). Young children's selective learning of rule games from reliable and unreliable models. Cognitive Development, 24(1), 61-69.
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Schwier, C., Van Maanen, C., Carpenter, M., & Tomasello, M. (2006). Rational imitation in 12-month-old infants. Infancy, 10(3), 303-311.
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Theory of Mind and Perspective-Taking

Using various methods, we have shown that infants as young as 9-12 months of age understand not just others’ goals but also their intentions, the action plans they choose to achieve their goals. Similarly, 1-year-olds understand not just others’ perception but also their attention, that is, they know which particular object or aspect of an object others are focusing on within their visual field. We have found that 1-year-olds even understand others’ knowledge/ignorance, in the sense of what objects or events others have experienced in the past. However, even much older children have difficulty taking others’ visual perspectives. We have investigated under what conditions infants know what others know and can see from a perspective different from their own. We have found that sharing experiences with others in joint attentional engagement facilitates young children’s understanding of what others know, but hinders children’s understanding of what others can see. We have also shown that 3-year-olds know that two people can have mutually incompatible desires, and that this understanding is related to executive function. And using various new nonverbal methods, we are studying 1-year-old infants’ understanding of others’ false beliefs.

Our general findings are that great apes and human infants are fairly similar in their understanding of others’ intentional states, but human infants go beyond apes in their skills and motivations for sharing intentions in such things as collaborative activities and cooperative communication.

Suggested readings

Buttelmann, D., Carpenter, M., & Tomasello, M. (2009). Eighteen-month-old infants show false belief understanding in an active helping paradigm. Cognition, 112(2), 337-342.
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Moll, H., & Tomasello, M. (2006). Level 1 perspective-taking at 24 months of age. British Journal of Developmental Psychology, 24(3), 603-613.
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Moll, H., & Tomasello, M. (2007). How 14- and 18-month-olds know what others have experienced. Developmental Psychology, 43(2), 309-317.
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