クツキ　アヤ   KUTSUKI Aya
  久津木　文
   所属   人間科学部 心理学科
   文学研究科 心理学専攻
   職種   教授
言語種別 英語
発行・発表の年月 2009/12
形態種別 研究論文（学術雑誌）
査読 査読あり
標題 Development of Infants' request expressions from 11 to 15 months
執筆形態 共著
掲載誌名 Psychological Reports
出版社・発行元 Ammons Scientific Publishing
巻・号・頁 Vol.105(Issue.3),pp.865-878
概要 Between 10 and 15 months of age, infants seem to become increasingly communicative. The focus of this study was changes in request behavior among infants at ages 11, 13, and 15 months (N = 22) in a longitudinal design. Changes in durations and frequencies of four different modes of behavior were examined, namely, use of hands, eye gaze, facial expression, and vocalization. Both frequencies and durations of the behaviors expressing requests increased with age, while those of nonrequest behaviors showed a different trend. Also investigated were changes in temporal coordination of different request modes. A greater number of infants used greater combinations of co-occurring modes when they were older than when they were younger.