Alerting attention and time perception in children
Alerting attention and time perception in children
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DOI：
10.1016/s0022-0965(03)00103-6
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发表时间：
2003-08-01
影响因子：
2.6
通讯作者：
Droit-Volet, S
中科院分区：
文献类型：
--
作者：
Droit-Volet, S
本实验采用视觉刺激为0.5~2 S或1~4 S的一分为二任务，考察了3、5、8岁儿童(N=86)时间分辨能力的时间分辨效应，结果表明，三组儿童的心理物理功能都是有序的，长反应的比例随着刺激时间的延长而增加，尽管功能的陡度随着年龄的增长而增加。在所有年龄组中，有短声的刺激持续时间都比没有短声的长。随着滴答声的响起，时间敏感度也有所提高，尤其是在年龄较小的儿童中。统计结果表明，在标量计时理论的框架内，滴答声减少了内部时钟中连接起搏器和累加器的开关的闭合延迟，并降低了其逐次试验的可变性。(C)2003年埃尔塞维尔科学公司(美国)。版权所有。
This experiment investigated the effect of a signal (i.e., a click) warning of the arrival of a stimulus to be timed on temporal discrimination in children aged 3, 5, and 8 years (N = 86), using a bisection task with visual stimuli ranging from 0.5 to 2 s or 1 to 4 s. In all groups, the psychophysical functions were orderly with the proportion of long responses increasing with the stimulus duration, although the steepness of functions increased with age. Stimulus durations were judged to be longer with than without the click in all age groups. With the click, time sensitivity also improved and more particularly in the younger children. The statistical results suggest, within the framework of the scalar timing theory, that the click reduces the closing latency of the switch that connects the pacemaker to the accumulator in the internal clock and also reduces its trial-by-trial variability. (C) 2003 Elsevier Science (USA). All rights reserved.