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September 8, 2026The Journal of Nervous and Mental Disease

Psychometric Evaluation of the Dimensional Anhedonia Rating Scale (DARS)

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Authors

PGParker GrantMSMarcos SanchesTGTony P. George

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Overview

Psychometric evaluation demonstrates strong validity and reliability for the Dimensional Anhedonia Rating Scale in co-occurring depression and cannabis use disorder, highlighting its clinical utility.

Key Points

  • To evaluate the psychometric validity, factor structure, and diagnostic performance of the Dimensional Anhedonia Rating Scale (DARS) in individuals with co-occurring major depressive disorder and cannabis use disorder.
  • Assessed N=35 participants completing the DARS alongside the Snaith–Hamilton Pleasure Scale (SHAPS), Hamilton Rating Scale for Depression (HRSD), Beck Depression Inventory (BDI), and Beck Anxiety Inventory (BAI).
  • Conducted confirmatory factor analysis, internal consistency assessments, Spearman rank correlations, and receiver operating characteristic (ROC) curve analysis referenced against SHAPS-defined anhedonia.
  • Confirmatory factor analysis supported a four-factor and second-order structure, demonstrating excellent internal consistency and expected convergent validity with the SHAPS (ρ = −0.64).
  • ROC analysis revealed strong discriminative capability (AUC = 0.81), identifying an optimal diagnostic score threshold of 65 with a sensitivity of approximately 0.85 and a specificity of approximately 0.75.

Cite This Study

Grant et al. (2026) studied this question.

synapsesocial.com/papers/6a9fd82f58e84d0ff5b47720https://doi.org/10.1097/nmd.0000000000001894
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