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 本研究使用ECR-RS量表评估四类亲密关系中的依恋状况，分别为亲子关系（父子、母子）、浪漫伴侣关系及朋友关系。每类关系均通过理论上包含两个维度的量表进行测评：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量表的内部结构效度与信度，并描述其项目参数及被试群体特征。本次研究共纳入251名被试，平均年龄为28.21±10.29岁，女性占比81.95%。分类探索性因素分析结果显示，该量表的二维结构与理论假设相符，且内部一致性指标表现良好。拉施-马斯特斯部分给分模型（Rasch-Masters Partial Credit Model）分析表明，量表各项目的难度水平接近总体均值，拟合指标（Infit/Outfit）均符合要求，同时对被试的θ参数水平进行了简要描述。研究结果显示，该量表可作为成人依恋测评的有效工具。