工作内存过载的长期表示成本
Nathaniel R Greene1, Dominic Guitard2, Alicia Forsberg3
1Department of Psychological and Brain Sciences, Villanova University, 148 Tolentine Hall, 800 E. Lancaster Ave, Villanova, PA, 19085, USA. nathaniel.greene@villanova.edu.
学习太多的信息可能会阻碍长期记忆的回忆. 超载工作记忆 (WM) 损害了详细信息和核心内容的检索,即使在老年人和有意学习期间,也会影响到自动核心编码的理论.
科学领域:
- 认知心理学 认知心理学
- 神经科学是一个神经科学.
- 人类的记忆 人类的记忆
背景情况:
- 新出现的证据表明,工作记忆 (WM) 容量限制可能会影响长期记忆 (LTM) 编码.
- 记忆理论通常假定相对自动的核心编码,但这可能有局限性.
研究的目的:
- 调查编码过程中超载工作记忆 (WM) 是否会损害长期记忆 (LTM) 检索要点和细节.
- 确定这种效应是否延伸到老年人,并在有意学习条件下持续存在.
主要方法:
- 实验1:在两个老年成人样本 (每个n=40) 中测试了LTM基质检索,在编码过程中使用不同的WM负载.
- 实验2:评估年轻人 (n=81) 和老年人 (n=40) 的LTM gist检索,在有意学习的过程中,在编码时使用过载的WM进行编码.
主要成果:
- 在老年人中,当对象被编码在超过WM容量的集中时,LTM gist检索减少了.
- 无论是年轻人还是老年人,当WM在有意的长期学习中被过载时,LTM核心检索受损.
结论:
- 在编码时过载工作记忆 (WM) 显著损害了长期记忆 (LTM) 的重点检索,即使在老年人和有意学习下.
- 这些发现挑战了自动基因编码的普遍性,并提出了记忆理论的边界条件.
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