Wesleyan University, Department of Psychology, Middletown, CT 06459, USA.
Psychiatry Res. 2012 Dec 30;200(2-3):177-83. doi: 10.1016/j.psychres.2012.06.035. Epub 2012 Jul 17.
Standardized lexical analysis of verbal output has not been applied to verbal fluency tasks in schizophrenia. Performance of individuals with schizophrenia on both a letter (n=139) and semantic (n=137) fluency task was investigated. The lexical characteristics (word frequency, age-of-acquisition, word length, and semantic typicality) of words produced were evaluated and compared to those produced by a healthy control group matched on age, gender, and Wechsler Adult Intelligence Scale-Third Edition (WAIS-III) vocabulary scores (n=20). Overall, individuals with schizophrenia produced fewer words than healthy controls, replicating past research (see Bokat and Goldberg, 2003). Words produced in the semantic fluency task by individuals with schizophrenia were, on average, earlier acquired and more typical of the category. In contrast, no differences in lexical characteristics emerged in the letter fluency task. The results are informative regarding how individuals with schizophrenia access their mental lexicons during the verbal fluency task.
言语流畅性任务的标准化词汇分析尚未应用于精神分裂症。本研究调查了精神分裂症患者在字母（n=139）和语义（n=137）流畅性任务上的表现。评估了所产生单词的词汇特征（词频、习得年龄、词长和语义典型性），并与在年龄、性别和韦氏成人智力量表第三版（WAIS-III）词汇得分上相匹配的健康对照组（n=20）进行了比较。总的来说，精神分裂症患者比健康对照组产生的单词更少，这与过去的研究结果一致（参见 Bokat 和 Goldberg，2003）。精神分裂症患者在语义流畅性任务中产生的单词的习得年龄平均更早，更符合类别。相比之下，字母流畅性任务中没有出现词汇特征的差异。这些结果为精神分裂症患者在言语流畅性任务中如何访问他们的心理词汇提供了信息。
