Faculty of Science, School of Psychology, University of New South Wales.
Neuropsychology. 2023 Nov;37(8):895-906. doi: 10.1037/neu0000923. Epub 2023 Aug 10.
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.
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.
Overall, participants were slower, (1, 43) = 9.841, = .003, η² = .245, and made more errors of commission on no-go trials, (1, 44) = 11.560, = .001, η² = .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, (1, 41) = 4.095, = .050, η² = .091, than the low disinhibition group, and more errors on the social, compared to nonsocial task, task-group interaction, (1, 41) = 7.233, = .010, η² = .150.
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).
创伤性脑损伤（TBI）后，抑制控制损伤非常普遍。尚未有任何实证研究探讨这是否可以解释严重 TBI 后的社交去抑制。此外，社会环境在研究社交去抑制时可能很重要。因此，本研究的目的是使用社会和非社会任务来研究严重 TBI 后抑制控制损伤在社交去抑制中的作用。
这是一项组间比较研究。26 名成年 TBI 患者和 27 名性别、年龄和教育程度匹配的对照组参与者参加了研究。使用额叶系统行为量表和社交去抑制访谈评估社交去抑制。使用社会和非社会 Go/No-Go 任务评估抑制控制。使用双向混合方差分析来检验研究假设。
总体而言，参与者在社会 Go/No-Go 任务上的反应速度较慢，（1, 43）= 9.841, =.003, η² =.245，错误反应更多，（1, 44）= 11.560, =.001, η² =.208。当根据去抑制水平（高 vs. 低）进行分类时，高去抑制组在社会任务上的错误更多，（1, 41）= 4.095, =.050, η² =.091，比低去抑制组更多，并且在社会任务上的错误比非社会任务更多，任务-组间交互作用，（1, 41）= 7.233, =.010, η² =.150。
社交去抑制似乎与抑制控制损伤有关，尽管只有在使用社会任务时才会出现这种情况。未发现社交去抑制与反应速度之间存在关系。（PsycInfo Database Record (c) 2023 APA, all rights reserved）。
