Department of Psychology, Durham University, Durham DH1 3LE, UK.
J Exp Child Psychol. 2010 Dec;107(4):438-51. doi: 10.1016/j.jecp.2010.06.002. Epub 2010 Jul 14.
Children often talk themselves through their activities, producing private speech that is internalized to form inner speech. This study assessed the effect of articulatory suppression (which suppresses private and inner speech) on Tower of London performance in 7- to 10-year-olds, relative to performance in a control condition with a nonverbal secondary task. Experiment 1 showed no effect of articulatory suppression on performance with the standard Tower of London procedure; we interpret this in terms of a lack of planning in our sample. Experiment 2 used a modified procedure in which participants were forced to plan ahead. Performance in the articulatory suppression condition was lower than that in the control condition, consistent with a role for self-directed (private and inner) speech in planning. On problems of intermediate difficulty, participants producing more private speech in the control condition showed greater susceptibility to interference from articulatory suppression than their peers, suggesting that articulatory suppression interfered with performance by blocking self-directed (private and inner) speech.
儿童在进行活动时经常自言自语，产生内化的私人言语，形成内部言语。本研究评估了发音抑制（抑制私人言语和内部言语）对 7 至 10 岁儿童伦敦塔任务表现的影响，相对于在控制条件下进行非言语次要任务的表现。实验 1 表明，发音抑制对使用标准伦敦塔程序的表现没有影响；我们根据样本中缺乏计划来解释这一点。实验 2 使用了一种修改后的程序，其中参与者被迫提前计划。在发音抑制条件下的表现低于控制条件，这与自我指导（私人和内部）言语在计划中的作用一致。在中等难度的问题上，在控制条件下产生更多私人言语的参与者比他们的同龄人更容易受到发音抑制的干扰，这表明发音抑制通过阻止自我指导（私人和内部）言语来干扰表现。
