1 University of Pavia, Pavia, Italy.
2 University of Milano-Bicocca, Milan, Italy.
Assessment. 2017 Mar;24(2):252-274. doi: 10.1177/1073191115602553. Epub 2016 Jul 28.
Objectified body consciousness (OBC) appears to play a crucial role in eating and body-related disturbances, which typically emerge during adolescence. The 24-item OBC Scale (OBCS) has been employed in eating disorder (ED) research and school-based adolescent samples, but evidence for its psychometric proprieties exists only in adult (nonclinical) populations. We evaluated (a) the construct validity and reliability of the 24-item OBCS with data collected from 1,259 adolescent girls and boys from the community (Study 1) and 643 adolescents of both genders with an ED (Study 2) and (b) whether the instrument functions similarly and equivalently measures the underlying construct(s) across gender and samples (i.e., test of measurement equivalence/invariance; Study 3). Results upheld the three-factor structure and measurement equivalence/invariance of the 24-item OBCS across gender and samples. OBCS subscale scores were internally consistent and stable over a 4-week period. OBCS subscales discriminated community participants with high and low ED symptom levels with fair accuracy, as well as community participants from those with an ED. They were also associated with five constructs closely related to both OBC and ED psychopathology. Latent mean comparisons across samples and gender were performed and discussed. Implications and directions for future research are also outlined.
客观身体意识（OBC）似乎在饮食和与身体相关的障碍中起着关键作用，这些障碍通常在青春期出现。24 项 OBC 量表（OBCS）已在饮食失调（ED）研究和基于学校的青少年样本中使用，但仅在成人（非临床）人群中存在其心理测量特性的证据。我们评估了（a）来自社区的 1259 名青少年女孩和男孩（研究 1）和 643 名男女青少年 ED 患者（研究 2）的数据中，24 项 OBCS 的构念效度和信度；（b）该工具是否在性别和样本之间具有相似的功能，并且等效地衡量潜在的结构（即，测量等效性/不变性的检验；研究 3）。结果支持 24 项 OBCS 在性别和样本之间的三因素结构和测量等效性/不变性。OBCS 分量表得分在内部具有一致性，并且在 4 周的时间内保持稳定。OBCS 分量表以相当高的准确度区分了具有高和低 ED 症状水平的社区参与者以及社区参与者和 ED 患者。它们还与与 OBC 和 ED 病理生理学密切相关的五个结构相关。在样本和性别之间进行了潜在均值比较，并进行了讨论。还概述了对未来研究的影响和方向。
