Lexical morphology and verb use in child first language loss: A preliminary case study investigation

In this paper, preliminary longitudinal data on the effects of first language loss on verb inflection and use by two Spanish-speaking siblings who were in an English-speaking environment were gathered. Both children were followed for approximately two years and were video-recorded while interacting with a familiar Spanish-speaking adult. Spontaneous Spanish speech samples were used to monitor patterns of L1 loss in the children's use of verbal lexemes and inflections. Bybee's (1985,1995) lexical morphology model was followed to predict the course of L1 loss. In particular, the concepts of semantic relevancy and input frequency, and their effects on verbal inflection in a child L1 loss context were examined. Results in general follow the predictions made by Bybee's model. Specifically, less semantically relevant distinctions, such as person/number inflection, appear to be more vulnerable to loss. Frequency of use also appears to impact the relative strength of verbal schemas. Nevertheless, individual differences were noted in the degree of loss observed. Directions for future research in the area of verbal morphology and language loss in children are suggested.