TY - JOUR
T1 - Cross-morpheme facilitation
T2 - The systematic emergence of agreement in 2-year-olds
AU - Rispoli, Matthew
N1 - Publisher Copyright:
© 2016 Taylor & Francis.
PY - 2016/7/2
Y1 - 2016/7/2
N2 - This article investigates the relationship between third person singular present tense agreement morphemes, copula is and verb-s, at 2;00 and 2;03. Language samples from 60 children at 2;00 were analyzed for the productivity of copula is as measured by the number of different morphemes preceding is in children’s sentences. Samples at 2;03 were analyzed for the number of different verb stems affixed with –s or marked with verb past inflection. Concurrent control measures of vocabulary and MLU were obtained at 2;03. Two hierarchical multiple regressions were performed to determine whether there was a relationship between 2;00 copula is and 2;03 verb inflection. Each regression had a different 2;03 verb inflectional category, verb-s or verb past, as its dependent variable. The results of the verb-s regression showed that both MLU and copula is productivity accounted for significant portions of unique variance in 2;03 verb-s productivity. In contrast, the results of the verb past regression revealed that only MLU accounted for a significant amount of variance. These data indicate that the grammatical features connecting copula is and verb-s emerge soon after the second birthday.
AB - This article investigates the relationship between third person singular present tense agreement morphemes, copula is and verb-s, at 2;00 and 2;03. Language samples from 60 children at 2;00 were analyzed for the productivity of copula is as measured by the number of different morphemes preceding is in children’s sentences. Samples at 2;03 were analyzed for the number of different verb stems affixed with –s or marked with verb past inflection. Concurrent control measures of vocabulary and MLU were obtained at 2;03. Two hierarchical multiple regressions were performed to determine whether there was a relationship between 2;00 copula is and 2;03 verb inflection. Each regression had a different 2;03 verb inflectional category, verb-s or verb past, as its dependent variable. The results of the verb-s regression showed that both MLU and copula is productivity accounted for significant portions of unique variance in 2;03 verb-s productivity. In contrast, the results of the verb past regression revealed that only MLU accounted for a significant amount of variance. These data indicate that the grammatical features connecting copula is and verb-s emerge soon after the second birthday.
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U2 - 10.1080/10489223.2015.1115050
DO - 10.1080/10489223.2015.1115050
M3 - Article
AN - SCOPUS:84958544799
SN - 1048-9223
VL - 23
SP - 293
EP - 306
JO - Language Acquisition
JF - Language Acquisition
IS - 3
ER -