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  • Studying extant species to model our past.
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  • Young children follow pointing over words in interpreting acts of reference.
    We referred young children (2- and 4-year-olds) to things in conflicting ways, that is, by pointing to one object while indicating l...
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  • Modeling children's early grammatical knowledge
    We report a series of experiments using a computational model to evaluate the explanatory power of child grammars based not on abstr...
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  • Universal grammar is dead.
    The idea of a biologically evolved, universal grammar with linguistic content is a myth, perpetuated by three spurio...
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  • Structural Priming as Implicit Learning in Language Acquisition: The Persistence of Lexical and Structural Priming in 4-Year-Olds
    These results provide the first evidence that priming in young children is sensitive to variation across the prime set and that it c...
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  • If They're So Good at Grammar, Then Why Don't They Talk? Hints From Apes' and Humans' Use of Gestures
    I look first at the communicative activities of our nearest primate relatives, the great apes, with a special focus on their communi...
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  • Society need not be selfish
    In the 1950s and 1960s, a major topic of research in animal behaviour was aggression. Konrad Lorenz's popular 1966 book, On Aggressio...
    Nature 461:41 (2009)
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  • Behavior. Like infant, like dog.
    Science 325:1213 (2009)
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  • Done wrong or said wrong? Young children understand the normative directions of fit of different speech acts.
    Young children use and comprehend different kinds of speech acts from the beginning of their communicative developme...
    Cognition : (2009)
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  • Young children's understanding of joint commitments.
    When adults make a joint commitment to act together, they feel an obligation to their partner. In 2 studies, the authors investigate...
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  • The roots of human altruism.
    These results suggest that human infants are naturally altruistic, and as ontogeny proceeds and they must deal more independently wi...
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  • `I want hold Postman Pat': An investigation into the acquisition of infinitival marker `to'
    Infinitival-to omission errors (e.g., *I want hold Postman Pat) are produced by many English-speaking children early in development....
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  • FLEXIBILITY IN THE SEMANTICS AND SYNTAX OF CHILDREN'S EARLY VERB USE
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  • Ratcheting up the ratchet: on the evolution of cumulative culture.
    We argue here that there are some different mechanisms at work as well. Chimpanzee cultural traditions represent behavioural biases...
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  • Can chimpanzees (Pan troglodytes) discriminate appearance from reality?
    We tested appearance-reality understanding in chimpanzees (Pan troglodytes) with a task requiring them to choose between a small gra...
    Cognition : (2009)
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  • Two-year-olds exclude novel objects as potential referents of novel words based on pragmatics.
    We asked whether this exclusion can be triggered by social-pragmatic context alone without pre-existing words as blockers. Two-year-...
    Cognition : (2009)
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  • A competitive nonverbal false belief task for children and apes.
    A nonverbal false belief task was administered to children (mean age 5 years) and two great ape species: chimpanzees (Pan troglodyte...
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  • Understanding of speaker certainty and false-belief reasoning: a comparison of Japanese and German preschoolers.
    We tested 3-year-old Japanese children in a similar task, using false statements accompanied by grammaticalized particles of speaker...
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  • Eighteen-month-old infants show false belief understanding in an active helping paradigm.
    We report a new paradigm to test false belief understanding in infants using a more active behavioral response: helping. Specificall...
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  • Young children's understanding of the context-relativity of normative rules in conventional games.
    We investigated young children's awareness of the context-relative rule structure of simple games. Two contexts were established in...
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