Jamieson Randall K, Spear Jackie
Department of Psychology, University of Manitoba.
Can J Exp Psychol. 2014 Mar;68(1):20-8. doi: 10.1037/cep0000009. Epub 2013 Dec 23.
People remember words they say aloud better than ones they do not, a result called the production effect. The standing explanation for the production effect is that producing a word renders it distinctive in memory and thus memorable at test. Whereas it is now clear that motoric production benefits remembering over nonproduction, and that more intense motoric production benefits remembering to a greater extent than less intense motoric production, there has been no comparison of the memorial benefit conferred by motoric versus imagined production. One reason for the gap is that the standard production-by-vocalization procedure confounds the analysis. To make the comparison, we used a production-by-typing procedure and tested memory for words that people typed, imagined typing, and did not type. Whereas participants remembered the words that they typed and imagined typing better than words that they did not, they remembered the words they typed better than the ones they imagined typing; an advantage that was consistent over tests of recognition memory and source discrimination. We conclude that motoric production is a sufficient and facilitative (but not a necessary) condition to observe the production effect. We explain our results by a sensory feedback account of the production effect and sketch a computational framework to implement that approach.
人们对自己大声说出的单词的记忆要比对未说出的单词的记忆更好,这一结果被称为产出效应。对产出效应的传统解释是,说出一个单词会使其在记忆中变得独特,从而在测试时易于记忆。虽然现在很清楚,动作产出比不产出更有利于记忆,而且更强的动作产出比更弱的动作产出在更大程度上有利于记忆,但尚未对动作产出与想象产出所带来的记忆益处进行比较。存在这一差距的一个原因是,标准的发声产出程序混淆了分析。为了进行比较,我们采用了打字产出程序,并测试了人们对所打出的单词、想象打字的单词以及未打出的单词的记忆。虽然参与者对所打出的单词和想象打字的单词的记忆要比对未打出的单词的记忆更好,但他们对所打出的单词的记忆要比对想象打字的单词的记忆更好;这种优势在识别记忆测试和来源辨别测试中都是一致的。我们得出结论,动作产出是观察产出效应的一个充分且促进性(但非必要)条件。我们通过对产出效应的感觉反馈解释来说明我们的结果,并勾勒出一个计算框架来实现该方法。