Pulling to stand: Common trajectories and individual differences in development
Pulling to stand: Common trajectories and individual differences in development
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DOI：
10.1002/dev.20593
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发表时间：
2012-03-01
影响因子：
2.2
通讯作者：
Scher, Anat
中科院分区：
文献类型：
--
作者：
Atun-Einy, Osnat;Berger, Sarah E.;Scher, Anat
本研究对27名婴儿进行了纵向研究，旨在探讨拉站（PTS）的发展。一般来说，婴儿开始PTS使用两条腿的策略，并过渡到半跪策略。作为一个群体，婴儿在PTS发作时对任何一种策略都没有偏好，在PTS发作后1个月左右，半跪在策略之间转换成为主导模式。对个体发育轨迹的检查显示了PTS发作时的年龄、PTS发作和半跪策略发作之间的时间、双腿策略作为主导模式的持续时间、半跪策略成为主导模式的时间、策略之间过渡的形状（逐渐与突然）以及PTS相对于其他运动里程碑发作的时间的变化。我们讨论了在新技能习得过程中的适应性行为方面的发展轨迹的变化，以及作为一个由婴儿在习得期之前和期间的独特经验塑造的过程。(C)2011 Wiley Periodicals，Inc. Dev Psychobiol 54：187-198，2012.
This longitudinal study of 27 infants examined the development of pulling-to-stand (PTS). In general, infants began PTS using a two-leg strategy and transitioned to a half-kneel strategy. As a group, infants showed no preference for either strategy at the onset of PTS, switching between strategies until half-kneeling became the dominant pattern about 1 month after the onset of PTS. Examination of individual developmental trajectories revealed variability in age at PTS onset, time between PTS onset and half-kneel strategy onset, duration of the two-leg strategy as the dominant pattern, time until the half-kneel strategy became the dominant pattern, shape of the transition between strategies (gradual vs. abrupt), and timing of PTS relative to onset of other motor milestones. We discuss variation in developmental trajectory in terms of adaptive behavior during the acquisition of new skills and as a process shaped by infants' unique experiences prior to and during the acquisition period. (C) 2011 Wiley Periodicals, Inc. Dev Psychobiol 54:187-198, 2012.