New York University, New York, NY 10003, USA.
Child Dev. 2011 Jul-Aug;82(4):1199-209. doi: 10.1111/j.1467-8624.2011.01595.x. Epub 2011 May 5.
Associations between infants' transition to walking and object activities were examined. Fifty infants were observed longitudinally during home observations. At 11 months, all infants were crawlers; at 13 months, half became walkers. Over age, infants increased their total time with objects and frequency of sharing objects with mothers. Bidirectional influences between locomotion and object actions were found. Walking was associated with new forms of object behaviors: Walkers accessed distant objects, carried objects, and approached mothers to share objects; crawlers preferred objects close at hand and shared objects while remaining stationary. Earlier object activities predicted walking status: Crawlers who accessed distant objects, carried objects, and shared objects over distances at 11 months were more likely to walk by 13 months.
研究了婴儿向行走过渡和物体活动之间的关联。通过家庭观察，对 50 名婴儿进行了纵向观察。11 个月时，所有婴儿都是爬行者；13 个月时，一半婴儿开始行走。随着年龄的增长，婴儿增加了与物体接触的总时间和与母亲分享物体的频率。在运动和物体动作之间发现了双向影响。行走与物体行为的新形式有关：行走者可以够到远处的物体，携带物体，并走近母亲与她分享物体；而爬行者更喜欢身边的物体，在静止时与母亲分享物体。较早的物体活动预测了行走的状态：11 个月时能够够到远处物体、携带物体并远距离分享物体的爬行者，在 13 个月时更有可能行走。
