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幼儿期记忆的发育差异:来自事件相关电位的见解

Developmental differences in memory during early childhood: insights from event-related potentials.

作者信息

Riggins Tracy, Rollins Leslie

机构信息

University of Maryland.

出版信息

Child Dev. 2015 May-Jun;86(3):889-902. doi: 10.1111/cdev.12351. Epub 2015 Feb 13.

Abstract

Age-related differences in behavioral and electrophysiological indices of memory were examined in 3- to 6-year-old children (N = 76). Behaviorally, no differences were observed in children's ability to identify old items; however, 3-year-old children were less accurate in correctly rejecting new items, and 3- and 4-year-old children recalled fewer contextual details compared to 5- and 6-year-old children. Age-related differences in electrophysiological measures (800-1,000 ms after stimulus onset) were observed both to items recalled with contextual details, which increased between 3 and 4 years, and items recalled without contextual details, which were greatest in 5-year-old children, even after adjusting for global age-related differences. These findings, interpreted within a dual-process framework, may suggest changes in both recollection and familiarity processes during early childhood.

摘要

研究人员对76名3至6岁儿童的记忆行为和电生理指标的年龄相关差异进行了考察。在行为方面,儿童识别旧项目的能力未观察到差异;然而,3岁儿童正确排除新项目的准确性较低,与5岁和6岁儿童相比,3岁和4岁儿童回忆的背景细节较少。在电生理测量方面(刺激开始后800 - 1000毫秒),观察到与回忆有背景细节的项目存在年龄相关差异,这种差异在3至4岁之间增加,而对于回忆无背景细节的项目也存在年龄相关差异,即使在调整了与年龄相关的整体差异后,5岁儿童的差异最大。在双加工框架内解释这些发现,可能表明幼儿期回忆和熟悉过程都发生了变化。

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