Droit-Volet S, Wearden J H
Blaise Pascal University, Clermont-Ferrand, France.
J Exp Child Psychol. 2001 Oct;80(2):142-59. doi: 10.1006/jecp.2001.2631.
Children aged 3, 5, and 8 years received training on a temporal bisection task, with standard short and long durations being presented as visual stimuli lasting 1 and 4 s or 2 and 8 s. Nonstandard comparison stimuli were spaced linearly between the standards. Psychophysical functions showed increasing proportions of "long" responses (responses appropriate to the long standard) with increasing stimulus duration, but were flatter in the younger children than in the 8-year-olds. Bisection points (the stimulus duration giving rise to 50% "long" responses) were close to the arithmetic mean of the short and long standards in most conditions. Statistical analyses and results from different theoretical models of the data all suggested that temporal sensitivity was higher in the 8-year-olds than in the younger groups, even when the possibility of random responding was controlled for.
3岁、5岁和8岁的儿童接受了一项时间二等分任务的训练，标准的短时长和长时长以持续1秒和4秒或2秒和8秒的视觉刺激呈现。非标准的比较刺激在标准刺激之间呈线性分布。心理物理学函数显示，随着刺激持续时间的增加，“长”反应（与长标准相适应的反应）的比例不断增加，但年幼儿童的函数比8岁儿童的更平缓。在大多数情况下，二等分点（产生50%“长”反应的刺激持续时间）接近短标准和长标准的算术平均值。对数据的统计分析和来自不同理论模型的结果均表明，即使控制了随机反应的可能性，8岁儿童的时间敏感性仍高于年幼儿童组。
