Instituto de Saude Mental Baseada em Evidencias (SAMBE), Department of Mental Health, Universidade Federal de Minas Gerais.
Psychol Assess. 2022 Aug;34(8):791-802. doi: 10.1037/pas0001152. Epub 2022 Jun 16.
Although the Impact Event Scale-Revised is widely used, its factor structure is still controversial. In addition, its longitudinal measurement invariance (LMI) remains uninvestigated. In this sense, we carried out three studies to investigate its psychometric properties. In Study 1, we evaluated the factorial structure of the scale comparing the different models existing in the literature in Brazilian samples who responded to the instrument during the COVID-19 pandemic. In Study 2, we provide support for a five-factor model throughout convergent validity with psychological distress and sleep problems, and criterion validity between people with diagnostic of mental disorders. Finally, we evaluated the LMI over a 6-month interval. The results indicated that the five-factor model has excellent goodness of fit and holds strict longitudinal invariance. Additionally, internal consistency and stability coefficients indicate that the scale is appropriate to measure posttraumatic stress symptomatology) in nonclinical samples across multiple assessments. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
虽然影响事件量表修订版（Impact Event Scale-Revised）被广泛应用，但它的因子结构仍存在争议。此外，其纵向测量不变性（longitudinal measurement invariance，LMI）尚未得到研究。在这方面，我们进行了三项研究，以调查其心理测量学特性。在研究 1 中，我们在巴西样本中评估了该量表的因子结构，比较了文献中存在的不同模型，这些样本在 COVID-19 大流行期间回答了该工具。在研究 2 中，我们通过与心理困扰和睡眠问题的收敛效度以及与精神障碍诊断人群的效标效度，为五因素模型提供了支持。最后，我们在 6 个月的时间间隔内评估了 LMI。结果表明，五因素模型具有极好的拟合优度，并保持严格的纵向不变性。此外，内部一致性和稳定性系数表明，该量表在多个评估中适用于测量非临床样本的创伤后应激症状。（PsycInfo 数据库记录（c）2022 APA，保留所有权利）。
