Barnhart Wesley R, Buelow Melissa T
Bowling Green State University, Bowling Green, OH, USA.
The Ohio State University, Newark, OH, USA.
Assessment. 2022 Sep;29(6):1190-1203. doi: 10.1177/10731911211004741. Epub 2021 Apr 2.
The Iowa Gambling Task (IGT) is one of the most common behavioral decision-making tasks used in clinical and research settings. Less-than-expected performance among healthy adults generates concerns about the validity of this task, and it is possible the particular scoring approach utilized could impact interpretation. We examined how performance patterns changed across several scoring approaches, utilizing a large, college student sample, both with ( = 406) and without ( = 1,547) a self-reported history of psychiatric or other diagnosis. Higher net scores were seen when participants selected decks with a low loss frequency than decks with high long-term outcomes; however, participants overall underperformed the IGT normative data sample. Receiver operating characteristic curves examining multiple scoring approaches revealed no threshold of impaired performance that both maximized sensitivity and minimized false positive rate on the IGT. Scoring approach matters in the determination of impaired decision making via the IGT in adults.
爱荷华赌博任务（IGT）是临床和研究环境中最常用的行为决策任务之一。健康成年人的表现低于预期引发了对该任务有效性的担忧，并且所采用的特定评分方法可能会影响解释。我们利用一个大型大学生样本，研究了几种评分方法下的表现模式变化，样本中有（n = 406）和没有（n = 1,547）自我报告的精神疾病或其他诊断史。当参与者选择损失频率低的牌组而非长期结果高的牌组时，会出现更高的净得分；然而，参与者总体表现低于IGT规范数据样本。检查多种评分方法的受试者工作特征曲线显示，在IGT上不存在既能最大化敏感性又能最小化假阳性率的受损表现阈值。评分方法在通过IGT确定成年人决策受损方面很重要。
