Production of a vocabulary checklist for inquiry prior to counseling for children aged 2 years

A Structure and Increase of Verbs

Abstract

To produce a vocabulary checklist for the accurate evaluation of speech development and the early detection・treatment of children with speech development disorder and those who require attention in counseling for children aged 2 years, we carried out a survey of expressed vocabulary in children aged about 2 years who attend nursery school prior to this counseling. A vocabulary checklist questionnaire was made to research a quantity and variation of vocabulary that infants between 23 and 35 months without speech and language retardation, and 161 parents participated in this research, whose child belonged to a kindergarten in Sakaide. This study focused on verbs in the vocabulary. The items used in the survey were decided using a vocabulary checklist for children aged 2 years produced by Okubo (1984) and“Japanese Illustrated Dictionary for Little Children”(Sanseido) as references. Of all 452 words surveyed, 123 verbs were analyzed in this study. And of the 123 verbs, 12% had been acquired in children aged 24 month, and 60% had been acquired in children aged 30 months. These results suggest marked acquisition of verbs between the age of 24 and 30 months.