The Depression Anxiety Stress Scalesu21 (DASS-21): Further Examination of Dimensions, Scale Reliability, and Correlates
The Depression Anxiety Stress Scalesu21 (DASS-21): Further Examination of Dimensions, Scale Reliability, and Correlates
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DOI：
10.1002/jclp.21908
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发表时间：
2012-12-01
影响因子：
3
通讯作者：
Lozano, Gregorio
中科院分区：
文献类型：
--
作者：
Osman, Augustine;Wong, Jane L.;Lozano, Gregorio
目的我们进行了两项研究，以检查维度，内部一致性信度估计，和潜在的相关性抑郁焦虑压力量表（DASS-21; Lovibond & Lovibond，1995）。研究1的参与者包括887名本科生（363名男性和524名女性，年龄18至35岁;平均[M]年龄= 19.46，标准差[SD] = 2.17），从两所公立大学招募，以评估单个DASS-21项目的特异性和评估内部一致性可靠性的估计。后续研究（研究2）的参与者包括410名学生（168名男性和242名女性，年龄18至47岁; M年龄= 19.65，SD = 2.88），从同一所大学招募，以进一步评估析因效度，并评估原始DASS-21总分和量表评分的潜在相关性。结果项目双因素和验证性因素分析显示，一般因素在DASS-21项目得分中占最大比例的共同方差（研究1）。在研究2中，拟合统计量显示双因子模型拟合良好。此外，DASS-21总量表评分与混合抑郁和焦虑量表评分的相关性高于与抑郁或焦虑特定量表评分的相关性。DASS-21量表评分的系数Ω估计值良好。结论需要进一步研究DASS-21的双因素结构和心理测量学特性，特别是其增量和判别效度，使用已知的临床组。
Objectives We conducted two studies to examine the dimensions, internal consistency reliability estimates, and potential correlates of the Depression Anxiety Stress Scales21 (DASS-21; Lovibond & Lovibond, 1995). Method Participants in Study 1 included 887 undergraduate students (363 men and 524 women, aged 18 to 35 years; mean [M] age = 19.46, standard deviation [SD] = 2.17) recruited from two public universities to assess the specificity of the individual DASS-21 items and to evaluate estimates of internal consistency reliability. Participants in a follow-up study (Study 2) included 410 students (168 men and 242 women, aged 18 to 47 years; M age = 19.65, SD = 2.88) recruited from the same universities to further assess factorial validity and to evaluate potential correlates of the original DASS-21 total and scale scores. Results Item bifactor and confirmatory factor analyses revealed that a general factor accounted for the greatest proportion of common variance in the DASS-21 item scores (Study 1). In Study 2, the fit statistics showed good fit for the bifactor model. In addition, the DASS-21 total scale score correlated more highly with scores on a measure of mixed depression and anxiety than with scores on the proposed specific scales of depression or anxiety. Coefficient omega estimates for the DASS-21 scale scores were good. Conclusions Further investigations of the bifactor structure and psychometric properties of the DASS-21, specifically its incremental and discriminant validity, using known clinical groups are needed.