title: Adaptation of the MacArthur-Bates Communicative Development Inventories for Spanish Children With Down Syndrome: Validity and Reliability Data for Vocabulary.
abstract: The MacArthur-Bates Communicative Development Inventories are widely used to study early language and communicative development. We recently developed a Spanish version for children with Down syndrome (the CDI-Down) adapted to their particular profile of linguistic and communicative development. The principal aims of this study are to assess the concurrent validity and test-retest reliability of the vocabulary section of this adaptation.
  
  
  
  Validation for productive vocabulary (Study 1) was achieved by correlating CDI-Down scores on expressive vocabulary and measures on the basis of spontaneous speech samples (n = 29). Validation for receptive vocabulary (Study 2) was achieved by correlating CDI-Down scores on receptive vocabulary and measures derived from language items of the Brunet-Lézine Scale (Josse, 1997; n = 70). Reliability (Study 3) was measured with a subset of parents who completed the same inventory 4 months after the original sampling (n = 26).
  
  
  
  CDI-Down expressive and receptive vocabulary scores showed a significant positive relationship with their comparison measures, thereby demonstrating convergent validity. A significant positive relationship was also found between test-retest measures for productive and receptive vocabularies, thus supporting the reliability of the adaptation.
  
  
  
  The results demonstrate that the CDI-Down is a valid and reliable tool that could be useful for parents, teachers, clinicians, and researchers.
authors.forename: Miguel
authors.initials: M
authors.lastname: Galeote
authors.forename: Elena
authors.initials: E
authors.lastname: Checa
authors.forename: Concepción
authors.initials: C
authors.lastname: Sánchez-Palacios
authors.forename: Eugenia
authors.initials: E
authors.lastname: Sebastián
authors.forename: Pilar
authors.initials: P
authors.lastname: Soto
mesh_terms: D002648:Child; D002663:Child Language; D002675:Child, Preschool; D003142:Communication; D004314:Down Syndrome / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007223:Infant; D007804:Language Development; D007807:Language Tests; D008297:Male; D015203:Reproducibility of Results; D014825:Vocabulary