Aubin Ginette, Chapparo Christine, Gélinas Isabelle, Stip Emmanuel, Rainville Constant
Centre de recherche Fernand-Seguin, Montreal, Quebec, Canada.
Aust Occup Ther J. 2009 Jun;56(3):189-99. doi: 10.1111/j.1440-1630.2007.00725.x.
BACKGROUND/AIM: Task analysis that targets information processing skills is an essential tool to understanding difficulties encountered by people with schizophrenia in their daily activities. The purpose of this preliminary study was to explore the use of the Perceive, Recall, Plan and Perform (PRPP) System of Task Analysis for this clientele. The specific objectives were to describe information processing difficulties as measured by the PRPP and to examine preliminary evidence of construct validity and interrater reliability.
In the first part of this study, 10 participants with schizophrenia living in the community were assessed using the PRPP during both a simple and a complex meal preparation task. Community functioning was measured using the Independent Living Skills Survey. In the second part, interrater reliability was appraised using three trained raters, who scored 15 participants preparing the complex meal preparation task.
Analysis of performance demonstrates that people with schizophrenia have difficulties especially in the Perceive and Plan quadrants of the PRPP and are more challenged in the complex task. The PRPP total score for the complex task is strongly related to the community functioning score. Results indicate good interrater reliability for the PRPP total score and moderate interrater reliability for the quadrant scores.
Despite the small sample size, results from this preliminary study support the use of the PRPP System of Task Analysis to further explore the impact cognitive deficits have on daily task performance and thus on community functioning in people with schizophrenia.
背景/目的：针对信息处理技能的任务分析是理解精神分裂症患者在日常活动中所遇到困难的重要工具。这项初步研究的目的是探索任务分析的感知、回忆、计划和执行（PRPP）系统在这类患者中的应用。具体目标是描述通过PRPP衡量的信息处理困难，并检验结构效度和评分者间信度的初步证据。
在本研究的第一部分，使用PRPP对10名居住在社区的精神分裂症患者在简单和复杂的 meal preparation任务中进行评估。使用独立生活技能调查来衡量社区功能。在第二部分，由三名经过培训的评分者评估评分者间信度，他们对15名准备复杂meal preparation任务的参与者进行评分。
表现分析表明，精神分裂症患者尤其在PRPP的感知和计划象限存在困难，并且在复杂任务中面临更大挑战。复杂任务的PRPP总分与社区功能得分密切相关。结果表明PRPP总分具有良好的评分者间信度，象限得分具有中等评分者间信度。
尽管样本量较小，但这项初步研究的结果支持使用PRPP任务分析系统来进一步探索认知缺陷对日常任务表现的影响，进而对精神分裂症患者社区功能的影响。
