Abstract
The authors participate the “counseling service of infants aged 24 months”in Sakaide, Kagawa prefecture, and follow up the speech and language development of them who were detected some developmental problems in health examination for children aged 18 months. However, we have no parameters in Japanese to evaluate the speech and language development of infants in 24 months. Therefore, we needed to produce a checklist to be used for screening in counseling. This present study is one of analyses of a trial survey to produce the vocabulary checklist, and focuses on a structure and increase of nominals according to classification of Nelson (1973). The purpose of this questionnaire survey is to research the quantity and qualitative structure of vocabulary of infants between 23 and 35 months, and 161 parents participated in this research, whose children belonged to 12 nursery schools in Sakaide. The results of the survey show as follows.And we discussed the necessity to pay attention to“evaluate”children's speech and language development in these three points. 1. Eighty-six nominals were expressed by 60% of children aged 24 months and 137 nominals by one aged 30 months. 2.The normal ranges of nominals in 24 months were between 80 and 100 words. 3.There were marked changes in words classified as“Objects”and “abstractions”in“general nominals (Nelson, 1973)”between the age of 24 and 30 months.
