Coparenting conflict is predictive of parents’ and children’s adjustment to divorce. An accurate assessment of postdivorce acrimonious coparenting relationships is critical for research, clinical, forensic, and public policy purposes. The Acrimony Scale (AS) is a measure commonly used to assess coparenting conflict. We translated and cross-culturally adapted the AS to the Portuguese context, testing its reliability and validity. Using a web-based survey, data were collected from a community and convenience sample of 196 unrelated divorced parents, assessing sociodemographic characteristics, coparenting conflict, and divorce adjustment. The study consisted of two phases: (1) forward-backward translation and cultural adaptation and (2) psychometric properties analyses: construct and criterion-related validity and internal consistency reliability. The 25-item AS was successfully translated and cross-culturally adapted to the Portuguese language. Principal component analyses (PCA) suggested a three-factor structure solution of 22-items, explaining 57.5% of the variance. Confirmatory factor analysis (CFA) showed the goodness of fit of this tridimensional model. The results also demonstrated acceptable convergent and good discriminant validity and high internal reliability. Scores on the AS suggested good known-groups validity and high discriminative power with 86.7% classification accuracy. The area under the ROC curve was 0.91, establishing a very good predictive value of the scale. We suggest that the AS is a reliable multidimensional measure to assess coparenting conflict after divorce and may be useful, namely, in the psychological assessment of child custody and evaluation of the effectiveness of coparenting conflict-based interventions. We discussed future research and practical implications.

共同养育冲突可以预测父母和孩子对离婚的适应。准确评估离婚后激烈的共同养育关系对于研究、临床、法医和公共政策目的至关重要。Acriony Scale (AS) 是一种常用来评估共同养育冲突的方法。我们翻译并跨文化改编 AS 以适应葡萄牙语环境，测试其可靠性和有效性。使用基于网络的调查，从 196 名无血缘关系的离异父母的社区和便利样本中收集数据，评估社会人口特征、共同养育冲突和离婚调整。该研究包括两个阶段：（1）向前向后翻译和文化适应和（2）心理测量特性分析：结构和标准相关的有效性和内部一致性可靠性。包含 25 项内容的 AS 已成功翻译并跨文化适应葡萄牙语。主成分分析 (PCA) 提出了 22 项的三因素结构解决方案，解释了 57.5% 的方差。验证性因子分析 (CFA) 显示了该三维模型的拟合优度。结果还证明了可接受的收敛效度和良好的区分效度以及较高的内部信度。AS 上的分数表明良好的已知组有效性和高判别力，分类准确率为 86.7%。ROC曲线下面积为0.91，建立了很好的量表预测值。我们建议 AS 是评估离婚后共同养育冲突的可靠多维措施，可能有用，即 在儿童监护的心理评估和基于冲突的共同养育干预的有效性评估中。我们讨论了未来的研究和实际意义。