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1 results

  • The Italian Words and Sentences MB-CDI: normative data and concordance between complete and short forms

  • Pasquale RINALDI, Patrizio PASQUALETTI, Silvia STEFANINI, Arianna BELLO, Maria Cristina CASELLI
  • Journal:
    Journal of Child Language / Volume 46 / Issue 3 / May 2019
    Published online by Cambridge University Press:
    18 February 2019, pp. 546-566

  • One of the most popular and widely used parent report instruments for assessing early language acquisition is the MacArthur-Bates Communicative Development Inventories (MB-CDI). This study compares normative data of the Italian Words and Sentences complete form (WS-CF) and short form (WS-SF). The samples included 752 children for the WS-CF and 816 children for the WS-SF designed for children aged 18–36 months. The concordance between WS-SF and WS-CF is analyzed in a subgroup of 65 children. The results revealed strong correlations between WS-CF and WS-SF in both lexical and grammar skills as well as strong relationship between lexical and grammar skills. There was a high percentage agreement (97%) between the two forms for scores below the 10th percentile, suggesting that the two forms may be used interchangeably in order to describe vocabulary and grammatical development.