OBJECTIVE Performance-based tests of functional capacity are rarely used in research on mild to moderate traumatic brain injury (TBI), but they may function as a link between cognitive impairment and real-world functioning. We sought to examine the relationship between cognitive functioning and performance-based functional capacity, as measured by the University of California San Diego Performance-Based Skills Assessment-Brief (UPSA-B), in Veterans with TBI histories. RESEARCH METHOD A total of 50 unemployed Operation Enduring Freedom/Operation Iraqi Freedom Veterans with mild to moderate TBI histories completed assessments of neuropsychological performance and functional capacity (UPSA-B total, financial subscale, and communication subscale scores). All participants were impaired in at least 1 neuropsychological domain on a prior clinical neuropsychological evaluation. A global deficit score was calculated based on neuropsychological performance on assessments of attention/working memory, processing speed, learning, delayed recall, prospective memory, and executive functioning. Deficit scores were also calculated for the executive-functioning domain and the processing-speed domain. Neuropsychological deficit scores were then correlated with UPSA-B performances. RESULTS Correlation coefficients indicated that worse global neuropsychological performance was related to worse overall functional capacity (rs = -.28, p = .046) and communication capacity (rs = -.34, p = .016). Worse executive functioning was related to worse functional capacity, r = -.37, p = .008, particularly in the domain of communication, r = -.44, p ≤ .001. Processing-speed performance was not related to functional capacity. CONCLUSIONS Executive functioning was moderately associated with both communication and overall everyday functioning capacity. Improvement in executive-functioning deficits may improve functional capacity, specifically in communication tasks. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

中文翻译：

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退伍军人创伤性脑损伤后的认知和功能能力。

目的 基于表现的功能能力测试很少用于轻度至中度创伤性脑损伤 (TBI) 的研究，但它们可以作为认知障碍和现实世界功能之间的联系。我们试图检查认知功能和基于表现的功能能力之间的关系，如加州大学圣地亚哥分校基于表现的技能评估 - 简报 (UPSA-B) 在有 TBI 历史的退伍军人中进行测量。研究方法 共有 50 名有轻度至中度 TBI 病史的失业持久自由行动/伊拉克自由行动退伍军人完成了神经心理表现和功能能力的评估（UPSA-B 总分、财务分量表和通信分量表分数）。在先前的临床神经心理学评估中，所有参与者至少在 1 个神经心理学领域受损。根据神经心理学在注意力/工作记忆、处理速度、学习、延迟回忆、前瞻记忆和执行功能评估方面的表现计算整体缺陷评分。还计算了执行功能域和处理速度域的缺陷分数。然后将神经心理缺陷评分与 UPSA-B 表现相关联。结果 相关系数表明，较差的整体神经心理表现与较差的整体功能能力 (rs = -.28, p = .046) 和沟通能力 (rs = -.34, p = .016) 相关。较差的执行功能与较差的功能能力相关，r = -.37，p = .008，特别是在通信领域，r = -.44，p ≤ .001。处理速度性能与功能容量无关。结论 执行功能与沟通和整体日常功能能力均适度相关。执行功能缺陷的改善可能会提高功能能力，特别是在沟通任务中。（PsycINFO 数据库记录 (c) 2019 APA，保留所有权利）。