Dakanalis Antonios, Carrà Giuseppe, Calogero Rachel, Zanetti M Assunta, Volpato Chiara, Riva Giuseppe, Clerici Massimo, Cipresso Pietro
Department of Brain and Behavioral Sciences, University of Pavia, P.za Botta 11, 27100, Pavia, Italy.
Division of Psychiatry, Faculty of Brain Sciences, University College of London, London, UK.
Child Psychiatry Hum Dev. 2016 Feb;47(1):133-50. doi: 10.1007/s10578-015-0551-1.
Anxiety in situations where one's overall appearance (including body shape) may be negatively evaluated is hypothesized to play a central role in Eating Disorders (EDs) and in their co-occurrence with Social Anxiety Disorder (SAD). Three studies were conducted among community (N = 1995) and clinical (N = 703) ED samples of 11- to 18-year-old Italian girls and boys to (a) evaluate the psychometric qualities and measurement equivalence/invariance (ME/I) of the Social Appearance Anxiety (SAA) Scale (SAAS) and (b) determine to what extent SAA or other situational domains of social anxiety related to EDs distinguish adolescents with an ED only from those with SAD. Results upheld the one-factor structure and ME/I of the SAAS across samples, gender, age categories, and diagnostic status (i.e., ED participants with and without comorbid SAD). The SAAS demonstrated high internal consistency and 3-week test-retest reliability. The strength of the inter-relationships between SAAS and measures of body image, teasing about appearance, ED symptoms, depression, social anxiety, avoidance, and distress, as well as the ability of SAAS to discriminate community adolescents with high and low levels of ED symptoms and community participants from ED participants provided construct validity evidence. Only SAA strongly differentiated adolescents with any ED from those with comorbid SAD (23.2 %). Latent mean comparisons across all study groups were performed and discussed.
在个人整体外表（包括体型）可能受到负面评价的情境中，焦虑被认为在进食障碍（EDs）及其与社交焦虑障碍（SAD）共病中起着核心作用。对11至18岁意大利女孩和男孩的社区样本（N = 1995）和临床样本（N = 703）进行了三项研究，以（a）评估社交外表焦虑（SAA）量表（SAAS）的心理测量质量和测量等效性/不变性（ME/I），以及（b）确定SAA或与进食障碍相关的社交焦虑的其他情境领域在多大程度上能够区分仅患有进食障碍的青少年和患有社交焦虑障碍的青少年。结果支持了SAAS在不同样本、性别、年龄类别和诊断状态（即患有和未患有共病社交焦虑障碍的进食障碍参与者）中的单因素结构和ME/I。SAAS表现出高内部一致性和3周重测信度。SAAS与身体意象测量、外表取笑、进食障碍症状、抑郁、社交焦虑、回避和痛苦之间的相互关系强度，以及SAAS区分社区中进食障碍症状水平高和低的青少年以及区分社区参与者和进食障碍参与者的能力，提供了结构效度证据。只有社交外表焦虑能够强烈区分患有任何进食障碍的青少年和患有共病社交焦虑障碍的青少年（23.2%）。对所有研究组进行了潜在均值比较并进行了讨论。
