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  • The genetic and environmental etiology of the association between vocabulary and syntax in first grade 

    Etiology of vocabulary and syntax
    Mimeau, Catherine; Dionne, Ginette; Feng, Bei; Brendgen, Mara; Vitaro, Frank; Tremblay, Richard Ernest; Boivin, Michel (Taylor & Francis, 2018-03-09)
    This study examined the genetic and environmental etiology of vocabulary, syntax, and their association in first graders. French-speaking same-sex twins (N = 555) completed two vocabulary tests, and two scores of syntax were calculated from their ...