Depression, Anxiety and Stress Scales DASS-42

Abstract

The Depression, Anxiety and Stress Scales (DASS-42) is a robust, 42-item psychometric scale developed by Lovibond and Lovibond in 1995. It is specifically designed to provide a differential measure of the severity of symptoms across three distinct, yet related, negative emotional states: Depression, Anxiety, and Stress. The instrument utilizes a self-report format, consisting of three 14-item subscales. Respondents evaluate the extent to which each statement applied to them over the past week using a 4-point Likert scale, ranging from 0 (Did not apply to me at all) to 3 (Applied to me very much or most of the time). Critically, the DASS-42 aims to distinguish between these highly correlated constructs, aligning with the tripartite model of affect rather than simply assessing general negative affect.

Keywords

DASS-42, Depression, Anxiety, Stress, Negative affect, Psychopathology, Self-report scale, Clinical assessment, Psychological measurement, Lovibond, Tripartite model

Authors

S.H. Lovibond, P.F. Lovibond

Purpose

The central objective of the DASS-42 is to furnish researchers and clinicians with a reliable and valid instrument capable of differentiating between the core components of negative emotional experience: depression, anxiety, and stress. Historically, many psychological scales conflated these states, making differential diagnosis challenging. The DASS-42 addresses this limitation by reflecting the tripartite model of affect, thereby enabling the acquisition of independent and specific severity scores for each of the three emotional domains.

Beyond its use in differential diagnosis, the scale functions as an effective screening tool for identifying individuals experiencing clinically significant levels of distress. It is extensively utilized across various contexts—including clinical settings, primary care, and academic research—to fulfill several practical goals: monitoring changes in symptom severity over the course of treatment, evaluating the efficacy of therapeutic interventions, and conducting large-scale epidemiological studies of emotional disorders.

Construct

The DASS-42 is structured to measure three discrete, yet empirically correlated, psychological constructs. This framework operates on the conceptual premise that while depression, anxiety, and stress share a substantial common variance related to general negative affect, they are distinguishable by unique symptomatic profiles:

• Depression Scale (D): This subscale focuses on symptoms indicative of low positive affect. Key components include anhedonia (inability to experience pleasure), low self-esteem, hopelessness, lack of interest or involvement in activities, and inertia or lack of motivation.
• Anxiety Scale (A): This scale measures symptoms primarily associated with physiological hyperarousal and subjective feelings of anxious affect. These symptoms encompass autonomic arousal (e.g., heart racing), skeletal muscle effects, situational panic, and fearful cognitions.
• Stress Scale (S): This construct assesses generalized persistent arousal and tension not solely attributable to anxiety or depression. It captures symptoms such as tension, difficulty relaxing, irritability, impatience, and a state of low frustration tolerance.

Validity

The DASS-42 possesses strong psychometric properties supported by extensive research. Construct validity is robustly confirmed through the consistent application of confirmatory factor analysis (CFA), which repeatedly supports the intended three-factor structure across diverse clinical and non-clinical populations, thus demonstrating that the instrument successfully measures three intended distinct constructs.

Furthermore, convergent validity has been established by showing high correlations between the DASS subscales and corresponding established measures, such as the Beck Depression Inventory (BDI) for the Depression scale and the Beck Anxiety Inventory (BAI) for the Anxiety scale. Crucially, discriminant validity is evidenced by the fact that while the three subscales are moderately correlated, they maintain sufficient distinction, with each subscale demonstrating a stronger correlation with its relevant criterion measure than with the other DASS subscales.

Reliability

The DASS-42 exhibits consistently high levels of internal consistency across its three scales. Studies typically report excellent Cronbach’s alpha coefficients: generally ranging from 0.91 to 0.96 for the Depression scale, 0.84 to 0.92 for the Anxiety scale, and 0.90 to 0.95 for the Stress scale. These high values are observed in both non-clinical community samples and various clinical populations, confirming that the items within each subscale reliably cohere and measure the same underlying construct.

In addition to internal consistency, test-retest reliability studies conducted over short intervals confirm the stability of the symptom measurement. This indicates that the DASS-42 provides consistent results when administered repeatedly, provided that the respondent’s underlying emotional state has not undergone significant clinical change between testing periods.

Factor Analysis

The empirical validation of the DASS-42 began with factor analysis, which confirmed the original conceptualization of three separate yet related factors. The initial factor analysis conducted by the scale’s authors provided strong support for the robust differentiation of the three scales, lending empirical weight to the tripartite model of emotional distress the instrument was designed to measure.

Subsequent exploratory and confirmatory factor analyses performed across a wide range of cultural, linguistic, and clinical groups have overwhelmingly supported this three-factor structure. This structural consistency is vital, as it validates the DASS-42’s unique ability to distinguish between depression (primarily low positive affect), anxiety (physiological hyperarousal), and stress (tension and irritability). This differential capacity makes the DASS-42 a superior tool for differential diagnosis compared to scales that only capture a general measure of negative affect.

Instrument

Test Type: Psychometric scale, Self-report inventory

Format: 42 items, scored using a 4-point Likert scale (0 to 3). The time frame for response is the preceding week (seven days).

Language Available: English (original), with numerous verified and validated translations available globally, including Persian, Spanish, Chinese, and French.

Population Group: Clinical and Non-clinical populations

Age Group: Adolescents (typically 16 years and older) and Adults

Population Details: The scale is extensively normed and validated for effective use in general community samples, student populations, and various clinical samples (e.g., psychiatric outpatients, primary care attendees).

Test Methodology: Respondents are instructed to rate each statement based on how much it applied to them over the past seven days. Subscale scores (Depression, Anxiety, Stress) are calculated by summing the scores of the 14 corresponding items. For standardization and comparison with the DASS-21 short form, the raw total score is typically doubled to produce the final severity score for each dimension.

Keywords

Lovibond, DASS, Psychological distress, Anxiety disorders, Affective disorders, Symptom severity, Stress measurement, Differential diagnosis, Self-report

Authors

Author ORCID Identifier: Not publicly provided for the original authors (Lovibond & Lovibond).

Affiliation Email addresses: Not publicly provided.

Correspondence Address: Psychology Foundation, Sydney, Australia (Original publication affiliation).

Permissions & Fee and Test Year

The DASS-42 was first published in 1995 (accompanying the 2nd Edition of the Manual). The scale, including its various short forms (e.g., DASS-21), is generally available free of charge for non-commercial research and clinical use. This usage is contingent upon providing appropriate citation to the authors and the manual. However, any commercial use, distribution, or adaptation of the instrument typically requires formal permission and may be subject to licensing fees.

Reference’s

Lovibond‚ S.H. & Lovibond‚ P.f. (1995). Manual for the Depression Anxiety Stress Scales. (2nd Ed) Sydney: Psychology Foundation.

Additional resource link for Persian translation details: http://www2.psy.unsw.edu.au/groups/dass/Persian/Persian.htm

Items of the Depression, Anxiety and Stress Scales DASS-42

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

Please read each statement and circle a number 0‚ 1‚ 2 or 3 which indicates how much the statement applied to you over the past week. There are no right or wrong answers.

Do not spend too much time on any statement.

0= Did not apply to me at all

1= Applied to me to some degree or for some of time

2= Applied to me to consider degree or for a good part of time

3= Applied to me very much or most of the time

1. I found myself getting upset by quite trivial things
2. I was aware of dryness of my mouth.
3. I couldn’t seem to experience any positive feeling at all.
4. I experience breathing difficulty (e.g. breathlessness or excessively rapid breathing in the absence of physical exertion).
5. I just couldn’t seem to get going
6. I tended to over-react to situations.
7. I had a feeling of shakiness (e.g. legs going to give way)
8. I found it difficult to relax.
9. I found myself in situations that made me so anxious I was most relieved when they ended
10. I felt that I had nothing to look forward to.
11. I found myself getting upset rather easily
12. I felt that I was using a lot of nervous energy.
13. I felt sad and depressed
14. I found myself getting impatient when I was delayed in any way (eg‚ lifts‚ traffic lights‚ being kept waiting)
15. I had a feeling of faintness
16. I felt that I had lost interest in just about everything
17. I felt I wasn’t worth much as a person.
18. I felt that I was rather touchy.
19. I perspired noticeably (e.g. hands sweaty) in the absence of high temperatures or physical exertion
20. I felt scared without any good reason.
21. I felt that life wasn’t worthwhile
22. I found it hard to “wind down”.
23. I had difficulty in swallowing
24. I couldn’t seem to get any enjoyment out of the things I did
25. I was aware of the action of my heart in the absence of physical exertion (e.g. sense of heart ‘missing a beat’).
26. I felt down hearted and blue.
27. I found that I was very irritable
28. I felt I was close to panic.
29. I found it hard to calm down after something upset me
30. I feared that I would be “thrown” by some trivial but unfamiliar task
31. I was unable to become enthusiastic about anything.
32. I found it difficult to tolerate interruptions to what I was doing
33. I was in a state of nervous tension
34. I felt I was pretty worthless
35. I was intolerant of anything that kept me from getting on with what I was doing.
36. I felt terrified
37. I could see nothing in the future to be hopeful about
38. I felt that life was meaningless.
39. I found myself getting agitated.
40. I was worried about situations in which I might panic and make a fool of myself
41. I experienced trembling (e.g. in the hands).
42. I found it difficult to work up the initiative to do things