注意控制和短时存储对音位流畅性和语义流畅性的影响

The Impact of Attentional Control and Short-term Storage on Phonemic and Semantic Fluency

工作记忆的中央执行系统具有注意控制和短时存储的功能。采用双任务范式，探讨了中央执行系统的注意控制和短时存储对言语流畅性的影响。实验1考察了中央执行系统的转换和抑制功能对音位流畅性和语义言语流畅性的影响。结果表明，中央执行系统的转换和抑制功能对两种言语流畅性的影响相当。实验2考察了中央执行系统的注意控制资源和短时存储资源对两种言语流畅性的影响。结果表明，语义流畅性更依赖于短时存储资源，音位流畅性更依赖于注意控制资源。研究还发现，被试完成语义流畅性任务的策略更易受概念系统的特性影响，完成音位流畅性任务的策略更易受语言的特点影响。在实验研究的基础上，作者提出了工作记忆影响言语流畅性的理论模型。

Recently， Rende explored the role of set shifting in verbal fluency， which is a subfunction of the central executive system. However， the central executive system contains more than one subfunction， including inhibition. During the verbal fluency tasks， participants were required to produce words in a certain time period (one minute); further， they were not permitted to repeat the words that they had just produced. Thus， it is reasonable that verbal fluency might employ the inhibition function.