Wu Yi-Jhen, Chou Chih-Chin, Chronister Julie, Hsu Chia-Ling, Zheng Michael Qi, Tobias Wendy A
Center for Research on Education and School Development, Technical University of Dortmund.
Rehabilitation and Mental Health Counseling Program, University of South Florida.
Rehabil Psychol. 2025 May;70(2):131-143. doi: 10.1037/rep0000564. Epub 2024 Aug 5.
Forber-Pratt and colleagues' Disability Identity Development Scale (DIDS) is the only disability identity measure that meets all the criteria for rigorous scale development. Little is known however about item fit for the DIDS.
PURPOSE/OBJECTIVE: (a) To investigate the construct validity of the DIDS scores at the item and factor level using item response theory (IRT) and confirmatory factor analysis (CFA); (b) to investigate convergent validity of the DIDS scores with related constructs; and (c) to determine the reliability of each DIDS factor.
RESEARCH METHOD/DESIGN: A convenience sample of 210 undergraduate college students with disabilities enrolled in a west coast 4-year public university participated in this study. Measures included the DIDS, the University Belongingness Questionnaire, and the College Self-Efficacy Inventory. Data were analyzed using the Rasch IRT framework, CFA, Omega reliability, and correlational analyses.
IRT and CFA results revealed the data fit a 36-item, four-factor DIDS structure. Three items in the factor measuring adoption of disability community values items were easier, and four items in the factor measuring contribution to the disability community were difficult as compared with other DIDS items. Omega reliability analyses showed strong reliability for each DIDS factor. Correlation analyses found convergent and discriminant validity evidence for the DIDS with correlations with the University Belongingness Questionnaire and College Self-Efficacy Inventory in the hypothesized direction and magnitude.
CONCLUSION/IMPLICATIONS: Findings provide evidence for Forber-Pratt and colleagues' theoretically and empirically derived DIDS, advancing the research, measurement, and practical application of disability identity development. Results are aligned with Forber-Pratt's psychosocial model of disability identity theoretical framework. (PsycInfo Database Record (c) 2025 APA, all rights reserved).
福布斯 - 普拉特及其同事的残疾身份发展量表（DIDS）是唯一符合严格量表开发所有标准的残疾身份测量工具。然而，对于DIDS的项目拟合情况却知之甚少。
目的/目标：（a）使用项目反应理论（IRT）和验证性因素分析（CFA）在项目和因素层面研究DIDS分数的结构效度；（b）研究DIDS分数与相关结构的收敛效度；（c）确定每个DIDS因素的可靠性。
研究方法/设计：从西海岸一所四年制公立大学招募了210名残疾大学生作为便利样本参与本研究。测量工具包括DIDS、大学归属感问卷和大学自我效能量表。使用拉施IRT框架、CFA、欧米茄信度和相关分析对数据进行分析。
IRT和CFA结果显示数据符合一个包含36个项目、四个因素的DIDS结构。与其他DIDS项目相比，在测量对残疾群体价值观接受程度的因素中有三个项目较容易，在测量对残疾群体贡献的因素中有四个项目较难。欧米茄信度分析表明每个DIDS因素都具有很强的信度。相关分析发现DIDS在与大学归属感问卷和大学自我效能量表的相关性方面具有收敛效度和区分效度的证据，且相关方向和程度符合假设。
结论/启示：研究结果为福布斯 - 普拉特及其同事从理论和实证推导得出的DIDS提供了证据，推动了残疾身份发展的研究、测量和实际应用。结果与福布斯 - 普拉特的残疾身份心理社会模型理论框架一致。（《心理学文摘数据库记录》（c）2025美国心理学会，保留所有权利）
