Strategies for resolving the heterogeneity of schizophrenics and their relatives using cognitive measures.
Strategies for resolving the heterogeneity of schizophrenics and their relatives using cognitive measures.
复制标题
使用认知测量来解决精神分裂症患者及其亲属的异质性的策略。
DOI：
10.1037//0021-843x.98.4.357
复制
发表时间：
1989
影响因子：
4.6
通讯作者：
Chapman,JP
中科院分区：
文献类型：
--
作者：
Chapman,LJ;Chapman,JP
精神分裂症患者和他们的亲属使用认知任务的异质性的决议需要措施的个人差异，通常是差分能力，这是从差分性能推断。适合于建立群体差异能力的任务往往不适合于测量个体差异。问题在于，对于任务A和B具有不同平均准确度的任何组，个体受试者的（A-B）差异分数与（A+ B）总体准确度具有人为曲线关系，对于二分法评分的自由反应任务，最大（A-B）分数出现在约50%（A+ B）总体准确度处。两种可能的解决方案是：（a）使用任务B分数对正常受试者确定的任务A分数的回归，将任务B分数转换为剩余分数;或（B）通过操纵变量将每个受试者的总体（A+ B）准确度滴定到恒定水平。（PsycInfo数据库记录（c）2022阿帕，保留所有权利）
The resolution of heterogeneity of schizophrenics and their relatives using cognitive tasks requires measures of individual differences—usually of differential ability, which is inferred from differential performance. Tasks that are suited for establishing a group's differential ability are often unsuited for measuring individual differences. The problem is that for any group for which Tasks A and B have different mean accuracy, the (A–B) difference scores of individual subjects have an artifactual curvilinear relation to (A+ B) overall accuracy, with the largest (A–B) scores occurring at about 50%(A+ B) overall accuracy for a dichotomously scored free-response task. Two possible solutions are (a) to convert Task B scores to residualized scores, using the regression of Task B scores on Task A scores as determined for normal subjects; or (b) to titrate overall (A+ B) accuracy of each subject to a constant level by manipulating a variable.(PsycInfo Database Record (c) 2022 APA, all rights reserved)