Infants use handrails as tools in a locomotor task
Infants use handrails as tools in a locomotor task
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DOI：
10.1037/0012-1649.39.3.594
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发表时间：
2003-05-01
影响因子：
4
通讯作者：
Adolph, KE
中科院分区：
文献类型：
--
作者：
Berger, SE;Adolph, KE
在2个实验中，作者证明了自适应运动可以涉及手段-目的问题的解决。16个月大的幼儿在有或没有扶手的情况下穿过不同宽度的桥梁。婴儿尝试更广泛的桥梁往往比狭窄的，并在狭窄的桥梁上的尝试取决于扶手的存在。幼儿有较长的lavelet，检查桥梁和扶手更密切，并修改他们的步态时，桥梁狭窄和/或扶手不可用。在走上桥之前探索桥和扶手并设计替代过桥策略的婴儿更有可能成功过桥。结果挑战了传统的工具概念：婴儿使用扶手作为增强平衡和执行其他不可能的目标导向任务的手段。
In 2 experiments the authors demonstrated that adaptive locomotion can involve means-ends problem solving. Sixteen-month-old toddlers crossed bridges of varying widths in the presence or absence of a handrail. Babies attempted wider bridges more often than narrow ones, and attempts on narrow bridges depended on handrail presence. Toddlers had longer latencies, examined the bridge and handrail more closely, and modified their gait when bridges were narrow and/or the handrail was unavailable. Infants who explored the bridge and handrail before stepping onto the bridge and devised alternative bridge-crossing strategies were more likely to cross successfully. Results challenge traditional conceptualizations of tools: Babies used the handrail as a means for augmenting balance and for carrying out an otherwise impossible goal-directed task.