Division of Speech Pathology, The University of Queensland, Brisbane, Queensland, Australia.
PLoS One. 2013;8(1):e53861. doi: 10.1371/journal.pone.0053861. Epub 2013 Jan 16.
The present study investigated the effect of performing an intentional non-meaningful hand movement on subsequent lexical acquisition and retrieval in healthy adults. Twenty-five right-handed healthy individuals were required to learn the names (2-syllable legal nonwords) for a series of unfamiliar objects. Participants also completed a familiar picture naming task to investigate the effects of the intentional non-meaningful movement on lexical retrieval. Results revealed that performing this hand movement immediately before linguistic tasks interfered with both new word learning and familiar picture naming when compared with no movement. These results extend previous findings of dual task interference effects in healthy individuals, suggesting that complex, non-meaningful, hand movements can also interfere with subsequent lexical acquisition and retrieval.
本研究旨在探究在健康成年人中，进行有意图的无意义手部运动对随后词汇习得和提取的影响。要求 25 名右利手健康个体学习一系列陌生物体的名称（双音节合法非词）。参与者还完成了熟悉的图片命名任务，以研究有意图的无意义运动对词汇提取的影响。结果表明，与无运动相比，在语言任务之前立即进行这种手部运动会干扰新词学习和熟悉的图片命名。这些结果扩展了先前在健康个体中发现的双重任务干扰效应的研究结果，表明复杂的、无意义的手部运动也会干扰随后的词汇习得和提取。
