Neufeld R W
Percept Mot Skills. 1977 Apr;44(2):499-505. doi: 10.2466/pms.1977.44.2.499.
Previous research (Marshall, 1973) has shown that the most pronounced component of deficit on a choice reaction time task among a mixed schizophrenic sample involved response-selection processes. Other evidence has indicated that paranoids may be more deficient in this respect than nonparanoids. Hence, it was hypothesized that the former subgroup of schizophrenics would display response-selection deficit while the latter subgroup would display either less or no deficit. Response-selection processes were re-examined using the CRT paradigm with comparisons carried out among paranoid and nonparanoid schizophrenics and a group of nonschizophrenic controls. Results indicated that only the paranoid schizophrenics displayed abnormally retarded response-selection operations, the nonparanoid schizophrenics being nonsignificantly discriminable from the controls. It was suggested that past evidence of CRT response-selection deficit among mixed schizophrenics might have been attributable primarily to the performance of the paranoids, whose performance appears to be adversely affected by an increase in the number of dimensions relevant to response selection.
先前的研究（马歇尔，1973年）表明，在混合型精神分裂症样本中，选择反应时任务中最明显的缺陷成分涉及反应选择过程。其他证据表明，偏执型患者在这方面可能比非偏执型患者更有缺陷。因此，有人提出假设，即精神分裂症患者的前一个亚组会表现出反应选择缺陷，而后一个亚组要么表现出较少的缺陷，要么没有缺陷。使用选择反应时范式重新检查了反应选择过程，并在偏执型和非偏执型精神分裂症患者以及一组非精神分裂症对照组之间进行了比较。结果表明，只有偏执型精神分裂症患者表现出异常延迟的反应选择操作，非偏执型精神分裂症患者与对照组没有显著差异。有人认为，过去关于混合型精神分裂症患者选择反应时反应选择缺陷的证据可能主要归因于偏执型患者的表现，他们的表现似乎受到与反应选择相关维度数量增加的不利影响。
