Cue salience and infant perseverative reaching: tests of the dynamic field theory
Cue salience and infant perseverative reaching: tests of the dynamic field theory
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DOI：
10.1111/j.1467-7687.2008.00769.x
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发表时间：
2009-01-01
影响因子：
3.7
通讯作者：
Thelen, Esther
中科院分区：
文献类型：
--
作者：
Clearfield, Melissa W.;Dineva, Evelina;Thelen, Esther
熟练的行为需要在以前成功的行为和适合当前环境的新行为之间取得平衡。我们描述了一个动态场模型来理解这种平衡，在婴儿持续达到。模型预测测试方面的相互作用的两个方面的典型的持续性达到任务：视觉提示指示的目标和记忆需求之间施加的延迟提示和达到。记忆的需求进行了操纵，施加一个0或3秒的延迟，和显着性的线索达到系统的变化。婴儿表现出更少的持续错误在0延迟与3秒延迟的基础上的线索显着性，这样一个更突出的视觉提示是必要的，以克服较长的延迟。这些结果对于理解婴儿产生伸手的基本感知运动过程和一般熟练的灵活行为具有重要意义。
Skilled behavior requires a balance between previously successful behaviors and new behaviors appropriate to the present context. We describe a dynamic field model for understanding this balance in infant perseverative reaching. The model predictions are tested with regard to the interaction of two aspects of the typical perseverative reaching task: the visual cue indicating the target and the memory demand created by the delay imposed between cueing and reaching. The memory demand was manipulated by imposing either a 0- or a 3-second delay, and the salience of the cue to reach was systematically varied. Infants demonstrated fewer perseverative errors at 0-delay versus 3-second delay based on the cue salience, such that a more salient visual cue was necessary to overcome a longer delay. These results have important implications for understanding both the basic perceptual-motor processes that produce reaching in infants and skilled flexible behavior in general.