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  • Title: Differential effects of age-of-acquisition for concrete nouns and action verbs: evidence for partly distinct representations?
    Author: Boulenger V, Décoppet N, Roy AC, Paulignan Y, Nazir TA.
    Journal: Cognition; 2007 Apr; 103(1):131-46. PubMed ID: 16616074.
    Abstract:
    There is growing evidence that words that are acquired early in life are processed faster and more accurately than words acquired later, even by adults. As neuropsychological and neuroimaging studies have implicated different brain networks in the processing of action verbs and concrete nouns, the present study was aimed at contrasting reaction times to early and later-acquired action verbs and concrete nouns, in order to determine whether effects of word learning age express differently for the two types of words. Our results show that while word frequency affected both types of words in the same way, distinct learning age effects were observed for action verbs and concrete nouns. A further experiment specified that this difference was observed for verbs describing actions belonging to the human motor repertoire, but not for verbs denoting actions past this repertoire (e.g., to neigh). We interpret these data within a recently emerging framework according to which language processing is associated with sensory motor programs.
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