A lack of rigorously validated body image measures for use among adolescents is hampering research in Brazil. This study aimed to validate a Brazilian Portuguese version of the Body Esteem Scale for Adults and Adolescents (BESAA; Mendelson et al., 2001). The BESAA was forward and back translated from English into Brazilian Portuguese before examining its factor structure, reliability, and validity among 475 adolescents (50.3% girls) aged 13 – 18 years (M_age = 15.35) from various regions across Brazil. Exploratory factor analysis identified an 18-item three-factor solution, with Appearance-Positive, Appearance-Negative, and Weight subscales. The removal of five problematic items led to a psychometrically robust model, invariant across gender and age, and was verified using confirmatory factor analysis. Test re-test reliability and internal consistency were good-to-excellent across all three factors (Cronbach’s a =0.85,.88, and.89). Concurrent validity was established through significant correlations with body dissatisfaction. Convergent validity was demonstrated via significant correlations with positive and negative affect. This Brazilian Portuguese version of the BESAA is a valid, reliable, and psychometrically robust measure of body image suitable for administration among adolescents in Brazil.

缺乏在青少年中使用的经过严格验证的身体形象测量正在阻碍巴西的研究。本研究旨在验证巴西葡萄牙语版本的成人和青少年身体自尊量表 (BESAA; Mendelson et al., 2001)。在对 475 名 13 至 18 岁的青少年（50.3% 的女孩）（M_年龄= 15.35) 来自巴西各个地区。探索性因素分析确定了一个包含 18 个项目的三因素解决方案，包括外观阳性、外观阴性和重量分量表。删除五个有问题的项目导致了一个心理测量稳健的模型，跨性别和年龄不变，并使用验证性因素分析进行​​了验证。重测信度和内部一致性在所有三个因素（Cronbach's a=0.85、.88 和 .89）。通过与身体不满意的显着相关性建立了同时效度。通过与正面和负面影响的显着相关性证明了收敛效度。这个巴西葡萄牙语版本的 BESAA 是一种有效、可靠且心理测量学上稳健的身体形象测量方法，适用于巴西青少年的管理。