Clearfield Melissa W, Diedrich Frederick J, Smith Linda B, Thelen Esther
Whitman College, Department of Psychology, 345 Boyer Ave, Walla Walla, WA 99362, United States.
Infant Behav Dev. 2006 Jul;29(3):435-44. doi: 10.1016/j.infbeh.2006.03.001. Epub 2006 Apr 18.
This paper examines the development of perseverative reaching in the A-not-B task. We describe two recent models that view perseveration as a sign of developmental progress toward stability. In Experiment 1, we test the novel prediction from both models that very young infants should not perseverate in the A-not-B task whereas older infants should. We tracked infants' behavior monthly on the A-not-B task and found that infants reached correctly at 5 months, and only perseverated at 7 and 8 months of age. Experiment 2 provides further evidence on the role of motor development in the emergence of perseveration by exploring the connection between perseveration and detailed changes in reach kinematics in two infants across the first year. These data together suggest that perseveration is a sign of developmental achievement on the path to stable and flexible behavior.
本文考察了在A非B任务中持续性够物行为的发展。我们描述了两种近期的模型，它们将持续性视为朝着稳定性发展进步的标志。在实验1中，我们检验了这两种模型的新预测，即非常小的婴儿在A非B任务中不应出现持续性错误，而年龄较大的婴儿则会。我们每月跟踪婴儿在A非B任务中的行为，发现婴儿在5个月时能正确够物，而在7个月和8个月大时才出现持续性错误。实验2通过探究持续性与两名婴儿在第一年中够物运动学详细变化之间的联系，进一步证明了运动发展在持续性出现中的作用。这些数据共同表明，持续性是通往稳定灵活行为道路上发展成就的标志。
