Carr Tony, Moss Timothy, Harris David
Sub-Department of Clinical Psychology, University of Plymouth, UK.
Br J Health Psychol. 2005 May;10(Pt 2):285-98. doi: 10.1348/135910705X27613.
To develop a psychometrically robust and widely applicable short form of the Derriford Appearance Scale, (DAS59), which (1) will reliably and validly assess the distress and difficulties experienced in living with problems of appearance, (2) is acceptable to clinical and non-clinical populations, and (3) facilitates research and clinical decision-making through good standardization and sensitivity.
Cross-sectional survey designs using clinical (out-patient and in-patient) and general population samples.
Twenty-five items were selected initially from the 59 items of the original DAS59. These were refined to 24 through item analyses and the scale was standardized on 535 patients with a range of problems of appearance and on a representative general population sample (N=1, 107).
All 24 items contributed well to the total score and internal consistency was high (alpha=.92). Test-retest reliability (6 months) was good (0.82), and criterion validity, with the DAS59, was excellent (0.88). Good construct validity was demonstrated in differences between (1) patient and general population samples, (2) members of the general population concerned and not concerned about their appearance, and (3) in patterns of convergent and divergent correlations with a range of established scales. The general population data revealed widespread concerns about appearance.
The DAS24 provides a widely applicable and acceptable short form of the original DAS59. It is psychometrically robust and discriminates well between patient groups, between clinical and non-clinical populations, and within the general population between those concerned, and those not concerned, about their appearance.
开发一种心理测量稳健且广泛适用的德里福德外貌量表简版（DAS59），该量表要能：（1）可靠且有效地评估因外貌问题而在生活中经历的痛苦和困难；（2）为临床和非临床人群所接受；（3）通过良好的标准化和敏感性促进研究及临床决策。
采用横断面调查设计，纳入临床（门诊和住院）及普通人群样本。
最初从原始DAS59的59个项目中选取25个项目。通过项目分析将其精简至24个，并在535名有一系列外貌问题的患者以及一个具有代表性的普通人群样本（N = 1107）上对该量表进行标准化。
所有24个项目对总分的贡献良好，内部一致性较高（α = 0.92）。重测信度（6个月）良好（0.82），与DAS59的效标效度极佳（0.88）。在以下方面的差异中证实了良好的结构效度：（1）患者样本与普通人群样本之间；（2）关注和不关注自身外貌的普通人群成员之间；（3）与一系列既定量表的收敛和发散相关性模式。普通人群数据显示对外貌的广泛关注。
DAS24是原始DAS59广泛适用且可接受的简版。它在心理测量方面稳健，能很好地区分患者群体之间、临床和非临床人群之间，以及普通人群中关注和不关注自身外貌的人群。
