Walker E, Harvey P
Psychopathology. 1986;19(6):294-302. doi: 10.1159/000284452.
Attentional impairment has been hypothesized to be associated with negative symptoms in schizophrenia. The present study examined the relation between attentional performance and positive and negative symptoms in both schizophrenic and manic patients. The results showed that deficits on the distraction conditions of a digit-span task were greatest in positive-symptom schizophrenics. Regression analyses revealed that only certain positive symptoms were related to digit-span scores; specifically, ratings of positive-thought disorder were inversely associated with performance for both schizophrenics and manics. The findings are discussed in light of their implications for conceptualizing the symptom categories and their laboratory correlates.
注意力损害被认为与精神分裂症的阴性症状有关。本研究考察了精神分裂症患者和躁狂症患者的注意力表现与阳性和阴性症状之间的关系。结果显示，在数字广度任务的分心条件下，阳性症状型精神分裂症患者的缺陷最为严重。回归分析表明，只有某些阳性症状与数字广度得分有关；具体而言，阳性思维障碍评分与精神分裂症患者和躁狂症患者的表现均呈负相关。根据这些发现对症状类别及其实验室相关因素概念化的意义进行了讨论。
