The GAD-7 is a practical and short self-report measure that has been widely utilized for the screening of generalized anxiety disorder (GAD), a severe form of anxiety disorder that is difficult to identify. Previous studies have investigated the GAD-7 in different settings and various cultures, but often without reporting important internal validity-related indices. To determine the psychometric properties of the GAD-7, the present study examined the internal consistency, convergent validity, underlying factor structure and item discrimination using both Classical Test Theory (CTT) and Item-Response Theory (IRT) models, within both a clinical and a non-clinical sample from Romania. A total of 747 participants, of whom 181 were clinical patients and 566 recruited from the general population, completed the Romanian version of the GAD-7, the Depression, Anxiety, and Stress Scale–21 (DASS-21), and the State-Trait Anxiety Inventory (STAI). CFA results confirmed that a modified one-factor model was an acceptable solution for the clinical sample. The internal consistency of the scale was satisfactory for both samples. The GAD-7 strongly correlated with the three subscales of the DASS-21 and exhibited moderate correlations with the STAI, confirming convergent validity. Keywords: GAD-7; Psychometric properties; Adaptation; IRT; DASS-21; STAI

GAD-7 是一种实用且简短的自我报告测量方法，已广泛用于筛查广泛性焦虑症 (GAD)，这是一种难以识别的严重焦虑症。先前的研究已经调查了不同环境和不同文化中的 GAD-7，但通常没有报告重要的内部有效性相关指数。为了确定 GAD-7 的心理测量特性，本研究使用经典测试理论 (CTT) 和项目反应理论 (IRT) 模型在临床和临床试验中检查了内部一致性、收敛有效性、潜在因素结构和项目歧视。以及来自罗马尼亚的非临床样本。共有 747 名参与者（其中 181 名临床患者和 566 名从普通人群中招募）完成了罗马尼亚语版本的 GAD-7，抑郁、焦虑和压力量表 - 21 (DASS-21) 和状态特质焦虑量表 (STAI)。CFA 结果证实，修改后的单因素模型是临床样本可接受的解决方案。两个样本的量表内部一致性均令人满意。GAD-7 与 DASS-21 的三个子量表强烈相关，并与 STAI 表现出中等相关性，证实了收敛有效性。关键词：GAD-7；心理测量特性；适应; IRRT；DASS-21；斯塔伊 GAD-7 与 DASS-21 的三个子量表强烈相关，并与 STAI 表现出中等相关性，证实了收敛有效性。关键词：GAD-7；心理测量特性；适应; IRRT；DASS-21；斯塔伊 GAD-7 与 DASS-21 的三个子量表强烈相关，并与 STAI 表现出中等相关性，证实了收敛有效性。关键词：GAD-7；心理测量特性；适应; IRRT；DASS-21；斯塔伊