Department of Psychological Sciences, University of Missouri, Columbia, MO 65211, USA.
J Psychiatr Res. 2011 Oct;45(10):1352-7. doi: 10.1016/j.jpsychires.2011.04.004. Epub 2011 May 8.
There is evidence that alogia and formal thought disorder (FTD), two prominent speech symptoms in schizophrenia, are associated with different patterns of verbal fluency task deficits. Verbal fluency is thought to involve several cognitive mechanisms, including controlled retrieval, semantic memory, and context processing.
The current research examined whether alogia and FTD were associated with different patterns of verbal fluency performance and whether these patterns of verbal fluency performance would implicate deficits in controlled retrieval, semantic memory, or context processing. In the current research, 34 people with schizophrenia completed letter and category fluency tasks and detailed ratings of alogia and FTD symptoms were made from typed transcripts.
Overall, alogia was associated with increased response latency between each word on the category fluency task, suggesting an association between alogia and poor controlled retrieval. In contrast, FTD was associated with a decreased proportion of semantically-related words on letter fluency, suggesting an association between FTD and poor context processing.
Alogia and FTD appear to be associated with unique patterns of fluency performance, implicating separate cognitive mechanisms.
有证据表明，精神分裂症中两个突出的言语症状——言语贫乏和形式思维障碍（FTD），与流畅性言语任务缺陷的不同模式有关。言语流畅性被认为涉及多种认知机制，包括受控检索、语义记忆和语境处理。
本研究探讨了言语贫乏和 FTD 是否与言语流畅性表现的不同模式有关，以及这些言语流畅性表现模式是否会涉及受控检索、语义记忆或语境处理方面的缺陷。在本研究中，34 名精神分裂症患者完成了字母和类别流畅性任务，并从打字稿中详细评估了言语贫乏和 FTD 症状。
总体而言，言语贫乏与类别流畅性任务中每个单词之间的反应时延长有关，表明言语贫乏与受控检索能力差有关。相比之下，FTD 与字母流畅性任务中语义相关词的比例降低有关，表明 FTD 与语境处理能力差有关。
言语贫乏和 FTD 似乎与独特的流畅性表现模式有关，涉及不同的认知机制。
