OBJECTIVE Inhibitory control impairment is highly prevalent following traumatic brain injury (TBI). There have not been any empirical investigations into whether this could explain social disinhibition following severe TBI. Further, social context may be important in studying social disinhibition. Therefore, the objectives of this research study were to investigate the role of inhibitory control impairment in social disinhibition following severe TBI, using a social and a nonsocial task. METHOD This was a between-group comparative study. Twenty-six adult participants with severe TBI and 27 sex, age, and education-matched controls participated. Social disinhibition was assessed using the Frontal Systems Behavior Scale and the Social Disinhibition Interview. Inhibitory control was assessed using a social and a nonsocial go/no-go task. Two-way mixed analyses of covariance were used to test study hypotheses. RESULTS Overall, participants were slower, F(1, 43) = 9.841, p = .003, ηp² = .245, and made more errors of commission on no-go trials, F(1, 44) = 11.560, p = .001, ηp² = .208, on the social go/no-go task. When categorized based on disinhibition level (high vs. low), the high disinhibition group made more errors on the social task, F(1, 41) = 4.095, p = .050, ηp² = .091, than the low disinhibition group, and more errors on the social, compared to nonsocial task, task-group interaction, F(1, 41) = 7.233, p = .010, ηp² = .150. CONCLUSIONS Social disinhibition appears to be associated with inhibitory control impairment, although this is only evident when a social task is used. No relationship between social disinhibition and response speed was found. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

中文翻译：

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严重创伤性脑损伤后社交去抑制的抑制控制损伤：一项使用社交和非社交进行/不进行任务的实验研究。

目的 抑制性控制障碍在创伤性脑损伤 (TBI) 后非常普遍。目前还没有任何实证研究来证明这是否可以解释严重创伤性脑损伤后的社会抑制解除。此外，社会背景对于研究社会抑制解除可能很重要。因此，本研究的目的是通过社交和非社交任务来调查严重 TBI 后抑制控制障碍在社交去抑制中的作用。方法 这是一项组间比较研究。26 名患有严重 TBI 的成年参与者和 27 名性别、年龄和教育程度相匹配的对照组参加了研究。使用额叶系统行为量表和社交解除抑制访谈来评估社交解除抑制。使用社交和非社交进行/不进行任务来评估抑制控制。使用协方差的双向混合分析来检验研究假设。结果 总体而言，参与者速度较慢，F(1, 43) = 9.841，p = .003，ηp² = .245，并且在不进行试验中犯下更多错误，F(1, 44) = 11.560，p = . 001，ηp² = .208，关于社交进行/不进行任务。根据去抑制水平（高与低）进行分类时，高去抑制组在社交任务中比低去抑制组犯了更多错误，F(1, 41) = 4.095, p = .050, ηp² = .091，与非社交任务、任务组交互相比，社交任务的错误更多，F(1, 41) = 7.233，p = .010，ηp² = .150。结论 社交去抑制似乎与抑制控制障碍有关，尽管这仅在使用社交任务时才明显。没有发现社会抑制解除和反应速度之间存在关系。（PsycInfo 数据库记录 (c) 2023 APA，保留所有权利）。