Kutsuki Aya, Ogura Tamiko, Egami Sonoko, Itakura Shoji
Psychology Laboratory, Department of Letters, Kyoto University, and Japan Science and Technology, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan.
Psychol Rep. 2009 Dec;105(3 Pt 1):865-78. doi: 10.2466/PR0.105.3.865-878.
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.
在10至15个月大时，婴儿似乎变得越来越善于交流。本研究的重点是在纵向设计中，对11个月、13个月和15个月大的婴儿（N = 22）的请求行为变化进行研究。研究考察了四种不同行为模式的持续时间和频率变化，即手部使用、目光注视、面部表情和发声。表达请求的行为的频率和持续时间均随年龄增长而增加，而非请求行为则呈现出不同的趋势。同时还研究了不同请求模式的时间协调性变化。与较小年龄时相比，更多的婴儿在较大年龄时会使用更多同时出现的模式组合。
