Specific facets of body image disturbance have an important role in eating disorder (ED) onset and maintenance yet have been assessed with single items and/or questionnaires predominantly developed in female samples to capture desire for a thinner body. The aim of this multipart study was to develop the multifaceted instrument for body image disturbance (MI-BoD) that will assess body image disturbance across gender and body size. In Study 1, interviews were conducted with 31 ED lived experience experts (45% females) to develop an initial item pool which was then rated for relevance and clarity by 59 international field experts, shortened and refined by the research team, and then rerated by 20 field experts and 91 ED lived experience experts. Of the 477 items developed from interviews, 46 were retained for the initial validation study. In Study 2, the MI-BoD was administered to undergraduate students (N = 937; 84% females), community adolescents (N = 208; 58% females), and individuals with self-reported ED diagnosis (N = 410; 77% females) to assess its preliminary psychometric properties. Exploratory factor analysis revealed six underlying factors, namely, Dissatisfaction, Overvaluation, Preoccupation, Fear of Weight Gain, Body Checking, and Body Exposure. No differential item functioning was detected for most MI-BoD items across gender, weight status, and ED status (symptomatic vs. asymptomatic). Overall, the MI-BoD showed good internal consistency, convergent and divergent validity, concurrent validity, and test-retest reliability. In conclusion, the MI-BoD is a promising tool for assessment of important facets of body image disturbance across gender, body size, and ED symptomatology. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

中文翻译：

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身体图像干扰多方面仪器 (MI-BoD) 的开发和初步验证。


身体意象障碍的特定方面在饮食失调（ED）的发病和维持中发挥着重要作用，但已通过主要在女性样本中开发的单项和/或问卷进行了评估，以捕捉对瘦身的渴望。这项多部分研究的目的是开发多方面的身体形象干扰工具（MI-BoD），用于评估跨性别和体型的身体形象干扰。在研究 1 中，对 31 名 ED 生活体验专家（45% 为女性）进行了访谈，以开发一个初始项目库，然后由 59 名国际领域专家对其相关性和清晰度进行评级，由研究团队进行缩短和完善，然后由20 名现场专家和 91 名 ED 生活体验专家。在访谈中制定的 477 个项目中，有 46 个保留用于初始验证研究。在研究 2 中，MI-BoD 对本科生（N = 937；84% 女性）、社区青少年（N = 208；58% 女性）和自我报告 ED 诊断的个人（N = 410；77%女性）评估其初步心理测量特性。探索性因素分析揭示了六个潜在因素，即不满意、高估、专注、担心体重增加、身体检查和身体暴露。大多数 MI-BoD 项目在性别、体重状态和 ED 状态（有症状与无症状）方面没有检测到差异项目功能。总体而言，MI-BoD 显示出良好的内部一致性、收敛效度和发散效度、并发效度和重测信度。总之，MI-BoD 是一种很有前途的工具，可用于评估跨性别、体型和 ED 症状的身体意象障碍的重要方面。 （PsycInfo 数据库记录 (c) 2024 APA，保留所有权利）。