@article {311057,
	title = {Cooperative activities in young children and chimpanzees.},
	journal = {Child Dev},
	volume = {77},
	year = {2006},
	month = {2006 May-Jun},
	pages = {640-63},
	abstract = {<p>Human children 18-24 months of age and 3 young chimpanzees interacted in 4 cooperative activities with a human adult partner. The human children successfully participated in cooperative problem-solving activities and social games, whereas the chimpanzees were uninterested in the social games. As an experimental manipulation, in each task the adult partner stopped participating at a specific point during the activity. All children produced at least one communicative attempt to reengage him, perhaps suggesting that they were trying to reinstate a shared goal. No chimpanzee ever made any communicative attempt to reengage the partner. These results are interpreted as evidence for a uniquely human form of cooperative activity involving shared intentionality that emerges in the second year of life.</p>
},
	keywords = {Adult, Animals, Child Behavior, Child Development, Child, Preschool, Communication, Cooperative Behavior, Female, Humans, Infant, Intention, Male, Pan troglodytes, Problem Solving, Species Specificity},
	issn = {0009-3920},
	doi = {10.1111/j.1467-8624.2006.00895.x},
	author = {Warneken, Felix and Chen, Frances and Tomasello, Michael}
}
