ABSTRACT Identity diffusion is a core element of the borderline personality organization. A valid and reliable assessment tool is needed to identify at-risk adolescents in the Italian context. In this study, we investigated the psychometric properties of the Assessment of Identity Development in Adolescence (AIDA), a self-report questionnaire designed to assess identity diffusion vs. identity integration, in an Italian sample (N = 1,102) of clinical and nonclinical adolescents. Explorative structural equation modeling supported the expected bi-factor structure with one general factor and six descriptive factors. Scale reliability was good, with Cronbach’s α = .94 for the AIDA total scale. The results supported convergent validity with measures of borderline personality features as well as discriminant validity with identity dimensions in ideological and interpersonal domains. The AIDA total score identity diffusion differed highly significantly and with a large effect size between the general population sample and patients diagnosed with borderline personality disorder (n= 55). The Italian version of the AIDA proved to be a valid and reliable measure to assess adolescents’ identity pathology within the Italian context.

中文翻译：

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意大利版青春期身份发展评估 (AIDA) 的心理测量学特性

摘要 身份扩散是边缘人格组织的核心要素。需要一个有效和可靠的评估工具来识别意大利背景下的高危青少年。在这项研究中，我们在意大利临床和非临床青少年样本 (N = 1,102) 中调查了青少年身份发展评估 (AIDA) 的心理测量学特性，这是一种旨在评估身份扩散与身份整合的自我报告问卷. 探索性结构方程模型支持具有一个一般因素和六个描述性因素的预期双因素结构。量表信度良好，AIDA 总量表的 Cronbach's α = .94。结果支持了对边缘人格特征的测量的收敛效度以及在意识形态和人际领域的身份维度的判别效度。AIDA 总分同一性扩散差异非常显着，并且在一般人群样本和诊断为边缘型人格障碍的患者（n = 55）之间具有很大的影响。意大利版本的 AIDA 被证明是在意大利背景下评估青少年身份病理学的有效且可靠的措施。