The Experiences in Close Relationships - Relationship Structures Questionnaire (ECR-RS): validity evidence and reliability

Abstract The ECR-RS assesses attachment in close relationships: father, mother, romantic partners and friends. Each relationship is assessed by a scale that theoretically comprises two factors: anxious and avoidant attachment. The main goals of this research was to estimate the first evidences of internal structure validity and reliability of the ECR-RS Brazilian version, and describe the item parameters and participants’ characteristics. The sample comprised 251 participants (mean age: 28.21 ± 10.29; 81.95% women). The categorical Exploratory Factor Analysis revealed two-dimensional structure of the scales, as theoretically hypothesized, with desirable internal consistency indexes. The Rasch-Masters Partial Credit Mode indicated that the instrument items have a level of difficulty close to the mean and suitable adjustments indexes (Infit/Outfit), and summarized description of participants’ theta levels. The results suggest that the instrument is an appropriate measure of attachment in adults.

摘要 本研究聚焦于亲密关系依恋量表修订简版（ECR-RS），该工具用于评估四类亲密关系中的依恋类型，涵盖父子、母子、浪漫伴侣及朋友关系。理论上，针对每一类亲密关系的评估量表均包含两个核心维度：焦虑型依恋与回避型依恋。本研究的核心目标为：首次验证巴西版ECR-RS的内部结构效度与信度，并描述其项目参数与受试群体特征。本次研究共纳入251名受试对象，平均年龄为28.21±10.29岁，其中女性占比81.95%。分类探索性因素分析结果显示，该量表符合理论假设的二维结构，且内部一致性指标表现优良。拉希-马斯特斯部分计分模型（Rasch-Masters Partial Credit Model）分析表明，量表项目难度整体接近平均水平，拟合指标（Infit/Outfit）适配性良好，并对受试的潜在特质θ水平进行了概括性描述。研究结果显示，该量表可作为成人依恋类型的有效评估工具。