Delgado Maria De Lurdes, Droit-Volet Sylvie
Blaise Pascal University, Clermont-Ferrand, France.
Q J Exp Psychol (Hove). 2007 Jun;60(6):820-36. doi: 10.1080/17470210600790471.
This study examined the effect of the variability of representation of durations in reference memory on temporal discrimination performance in children aged 5 and 8 years as well as in adults using a bisection (Experiment 1) and a generalization task (Experiment 2). In each task, the participants were familiarized before the blocks of tested trials with either the same referent duration values (fixed condition) or a distribution of referent duration values, with a mean equal to the referent durations used in the fixed condition and a .20 coefficient of variation (variable condition). The results showed that the sensitivity to duration was lower in the variable than in the fixed condition in the children and, to a lesser extent, in the adults. The modelling of the data indicated that this effect was due to the increase in the variability of the representation of durations in reference memory, but also to changes in the decisional processes.
本研究使用二分法任务（实验1）和泛化任务（实验2），考察了参考记忆中时长表征的变异性对5岁、8岁儿童以及成年人时间辨别能力的影响。在每个任务中，参与者在测试试次组之前，会接触到相同的参考时长值（固定条件）或参考时长值的分布，其平均值等于固定条件下使用的参考时长，变异系数为0.20（可变条件）。结果表明，儿童在可变条件下对时长的敏感度低于固定条件，成年人的这种差异程度较小。数据建模表明，这种效应不仅是由于参考记忆中时长表征变异性的增加，还归因于决策过程的变化。
