ABSTRACT

Practice has been conceptualized in terms of a search process through an evolving perceptual-motor workspace. The experiment was set up to examine whether the inherent variability of the system would influence perception of the relevant properties of the task space. We reanalyzed the data from Hsieh, Liu, Mayer-Kress, and Newell (2013) in which participants performed a speed-accuracy aiming task and feedback emphasized either temporal or spatial accuracy in different conditions. The maximum variability in spatial error during practice differentiated individual's best performance in the fast speed-accuracy conditions. Additionally, we found that a threshold of variability predicted discontinuities during practice within individuals. The findings support the proposition that inherent variability affords perception of the relevant dimension of the task. The search motion through the perceptual-motor workspace was continuous or discontinuous depending on the constraints of the movement speed-accuracy condition.

摘要

实践是通过不断发展的感知运动空间在搜索过程中进行概念化的。建立该实验是为了检查系统的固有可变性是否会影响对任务空间相关属性的感知。我们对Hsieh，Liu，Mayer-Kress和Newell（2013）的数据进行了重新分析，在这些数据中，参与者执行了速度精确的瞄准任务，反馈强调了在不同条件下的时间或空间准确性。在练习过程中，空间误差的最大变异性使个人在快速速度精度条件下的最佳表现脱颖而出。此外，我们发现变异性阈值可预测个体在练习过程中的不连续性。这些发现支持以下观点：内在的可变性可以感知任务的相关方面。根据运动速度准确性条件的限制，通过感知运动空间进行的搜索运动是连续的还是不连续的。