Depression Anxiety Stress Scale (DASS-10)


The Depression Anxiety Stress Scale (DASS-10) is a brief 10-item version of the full version of the Depression Anxiety Stress Scale (DASS-42). The DASS-10 can determine the overall level of distress as well as provides subscale scores for two symptom clusters: Depression and Anxiety/Stress The scale was designed to be used for routine outcome monitoring in psychology practices and other mental health settings. It provides an overall level of distress that is sensitive to clinical change and can be used to track the effectiveness of treatment. It can be used with people 16 years and older.

Validity and Reliability
Halford and Frost (2021) developed the DASS-10 as a shorter version of the original DASS-42 and DASS-21 (Lovibond & Lovibond, 1995). EFA and CFA yielded two highly correlated factors: Anxiety-Stress and Depression subscales. Both subscales and the higher-order Distress factor had high internal consistency (Cronbach’s alpha = 0.83, 0.85, & 0.89 respectively; Halford & Frost, 2021). Based on the above psychometric properties, reliable change was determined to be a five or more point change between first and last DASS-10 administration. As expected, the validation study found the DASS-10 was able to discriminate between populations, with a clinical sample scoring significantly higher (mean = 7.67, SD = 4.36) than a community sample (mean = 3.01, SD 3.15). The community sample of newly wedded couples (n = 376) can be used to compute normative percentiles.

The total score represents overall distress (0 to 30), with higher scores indicating more severe distress or a greater number of symptoms. Two subscales are presented: Anxiety-Stress: Items 1, 4, 6, 7, 8, 9 (raw score range = 0 to 18) Depression: Items 2, 3, 5, 10 (raw score range = 0 to 12) Overall scores can be classified into three severity groups: Mild/subclinical (raw score = 6 or less, average score 0.6 or less; which is equivalent to a percentile of 83 or less) Moderate (raw score between 7 and 12, average between 0.7 and 1.2; which is equivalent to a percentile of between 84 and 99.8) Severe (raw score 13 or more, average between 1.3 and 3; which is equivalent to a percentile of between of 99.9 or greater) A normative percentile is computed based on a community sample (Halford & Frost, 2021), indicating how the respondent scored in relation to a typical pattern of responding for adults. For example, a percentile of 83 or less indicates the individual has less distress than 83 percent of the normal population, and puts them in the mild/subclinical category. In mental health settings it is typical to see people with percentiles in the 90s. In addition to the raw score being computed, average scores are calculated by dividing the raw score by the number of items, giving a sense of the general pattern of responding at the subscale level. Average scores are helpful for interpretation as they allow comparisons between total score and subscales. When administered more than once, average scores are graphed, showing the change in symptoms over time. Based on reliable change calculations, interpretive text is provided describing the respondent’s change in symptoms from first to last administrations, as either having experinced: deterioration (increase in scores by 5 or more) no reliable change (scores changed by 4 or less) reliable improvement (scores reduced by 5 or more) recovery (scores reduced by 5 or more and most recent score is 6 or less, putting the in the Mild/Subclinical range)

Halford, W. K., & Frost, A. D. J. (2021). Depression Anxiety Stress Scale-10: A Brief Measure for Routine Psychotherapy Outcome and Progress Assessment. Behaviour Change: Journal of the Australian Behaviour Modification Association, 1–14.

Number Of Questions

Lovibond S.H. & Lovibond P.F.(1995). Manual for the Depression, Anxiety, Stress Scale. Sydney: Psychology Foundation, University of New South Wales.

Assessment Report

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