Psychometric properties and predictive validity of Brazilian reward-based eating drive scale.

IF 2 3区心理学 Q2 PSYCHOLOGY, CLINICAL

Journal of Health Psychology Pub Date : 2026-11-01 Epub Date: 2026-03-07 DOI:10.1177/13591053261420602

Tainá Lopes da Silva, Uku Vainik, Ashley Mason, Janete de Souza Urbanetto, Ana Maria Pandolfo Feoli

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Abstract

This study aimed to adapt and validate the Reward-Based Eating Drive Scale (RED-13) for Brazilian Portuguese and assess its psychometric properties and predictive validity. The adaptation process followed established cross-cultural guidelines, including translation, synthesis, back-translation, expert committee review, and pilot testing. Content validity was evaluated using the Content Validity Index. A total of 452 adults aged 18-59 years, recruited online, participated in the psychometric assessment. Confirmatory factor analysis supported the scale's three-dimensional structure (RMSEA < 0.0001, SRMR = 0.041, TLI = 1.000, CFI = 1.000). Internal consistency was high (α = 0.921, ω = 0.922). RED-13 BR scores showed moderate correlations with food cravings and weak correlations with body mass index (rho = 0.266, p < 0.001). Receiver operating characteristic analysis indicated predictive ability for pre-obesity and obesity. These findings suggest that the RED-13 BR is a valid and reliable instrument for assessing reward-based eating behavior in Brazilian adults.

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巴西奖励型进食驱动量表的心理测量特征及预测效度。

本研究旨在对基于奖励的进食驱动量表（RED-13）进行调整和验证，并评估其心理测量特性和预测效度。适应过程遵循既定的跨文化指导方针，包括翻译、综合、反翻译、专家委员会审查和试点测试。使用内容效度指数评估内容效度。共有452名年龄在18-59岁之间的成年人在线招募，参与了心理测量评估。验证性因子分析支持量表的三维结构(RMSEA p

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Health Psychology PSYCHOLOGY, CLINICAL-

CiteScore

7.50

自引率

3.10%

发文量

期刊介绍： ournal of Health Psychology is an international peer-reviewed journal that aims to support and help shape research in health psychology from around the world. It provides a platform for traditional empirical analyses as well as more qualitative and/or critically oriented approaches. It also addresses the social contexts in which psychological and health processes are embedded. Studies published in this journal are required to obtain ethical approval from an Institutional Review Board. Such approval must include informed, signed consent by all research participants. Any manuscript not containing an explicit statement concerning ethical approval and informed consent will not be considered.