The Committed Action Questionnaire (CAQ-8) is an instrument developed to measure committed action, an adaptive psychological process. The main goal in the current study was to confirm the factorial structure of the Portuguese version of the CAQ-8 in a transdiagnostic clinical sample of participants diagnosed with an eating disorder (ED). Participants were 102 female outpatients (M_age = 28.1, SD = 10.6; M_BMI = 20.0, SD = 5.5) recruited from a clinical setting specialized in the treatment of ED. Confirmatory factor analysis (CFA) was used to confirm the CAQ-8's factorial structure. Both first- and second-order models revealed adequate goodness-of-fit indices (e.g. χ²/df = 1.545, p = .06; SRMR = 0.049; RMSEA = 0.073; CFI/TLI > 0.95). A moderation model revealed that the conditional effect of weight, shape and eating concerns on experiential avoidance was significantly moderated by increased levels of committed action, F(3, 97) = 23.79, p < .001, accounting for 42% of the final variance. The present study supports the usefulness of the CAQ-8 as a measure of levels of committed action with patients diagnosed with an ED.

中文翻译：

---

葡萄牙饮食失调临床样本中承诺行动问卷 (CAQ-8) 的阶乘结构和心理测量学特性

承诺行动问卷 (CAQ-8) 是一种用于衡量承诺行动的工具，这是一种适应性心理过程。当前研究的主要目标是在被诊断患有进食障碍 (ED) 的参与者的跨诊断临床样本中确认葡萄牙版 CAQ-8 的因子结构。参与者是 从专门治疗 ED 的临床环境中招募的102 名女性门诊患者（ M_年龄 = 28.1，SD  = 10.6；M _BMI  = 20.0，SD = 5.5）。验证性因子分析 (CFA) 用于确认 CAQ-8 的因子结构。一阶和二阶模型都显示了足够的拟合优度指数（例如χ2 ^/df  = 1.545，p  = .06；SRMR = 0.049；RMSEA = 0.073；CFI/TLI > 0.95）。一个适度模型显示，体重、体型和饮食问题对体验性回避的条件影响被承诺行动水平的增加显着缓和，F (3, 97) = 23.79, p  < .001，占最终方差的 42% . 本研究支持 CAQ-8 作为衡量诊断为 ED 患者承诺行动水平的有用性。