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    Degree and not type of iconicity affects sign language vocabulary acquisition

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    Date Issued
    2019-05-15
    Publisher Version
    10.1037/xlm0000713
    Author(s)
    Caselli, Naomi
    Pyers, Jennie
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    Permanent Link
    https://hdl.handle.net/2144/38466
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    Accepted manuscript
    Citation (published version)
    Naomi Caselli, Jennie Pyers. 2019. "Degree and Not Type of Iconicity Affects Sign Language Vocabulary Acquisition." Journal of Experimental Psychology: Learning, Memory, and Cognition, https://doi.org/10.1037/xlm0000713
    Abstract
    Lexical iconicity—signs or words that resemble their meaning—is over-represented in children’s early vocabularies. Embodied theories of language acquisition predict that symbols are more learnable when they are grounded in a child’s first-hand experiences. As such, pantomimic iconic signs, which use the signer’s body to represent a body, might be more readily learned than other types of iconic signs. Alternatively, the Structure Mapping Theory of iconicity predicts that learners are sensitive to the amount of overlap between form and meaning. In this exploratory study of early vocabulary development in ASL, we asked whether type of iconicity predicts sign acquisition above and beyond degree of iconicity. We also controlled for concreteness and relevance to babies, two possible confounding factors. Highly concrete referents and concepts that are germane to babies may be amenable to iconic mappings. We re-analyzed a previously published set of ASL CDI reports from 58 deaf children learning ASL from their deaf parents (Anderson & Reilly, 2002). Pantomimic signs were more iconic than other types of iconic signs (perceptual, both pantomimic and perceptual, or arbitrary), but type of iconicity had no effect on acquisition. Children may not make use of the special status of pantomimic elements of signs. Their vocabularies are, however, shaped by degree of iconicity, which aligns with a Structure Mapping Theory of iconicity, though other explanations are also compatible (e.g., iconicity in child-directed signing). Previously demonstrated effects of type of iconicity may be an artifact of the increased degree of iconicity among pantomimic signs.
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    © 2019, American Psychological Association. This paper is not the copy of record and may not exactly replicate the final, authoritative version of the article. Please do not copy or cite without authors' permission. The final article will be available, upon publication, via its DOI: http://dx.doi.org/10.1037/xlm0000713
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