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Objective: There is a paucity of quantitative measures of resilience specifically validated for young Aboriginal people in Australia. We undertook the first investigation of validity and reliability of the Connor-Davidson Resilience Scale (CD-RISC) in a sample of Australian Aboriginal people, with a focus on youth. Method: We conducted a cross-sectional study of resilience among a sample of 122 Aboriginal youth (15–25 years old) in New South Wales and Western Australia, featuring self-completes of the 10-item CD-RISC in online (N = 22) and face-to-face (N = 100) settings. A Rasch analysis using the 122 CD-RISC responses determined item independence, response category adequacy, differential item functioning, unidimensional measurement, person and item reliability, and item fit. Confirmatory factor analysis was also conducted, complementary to the Rasch analysis. Results: Four problematic items from the original instrument were removed, due to item dependence (items 2, 6 and 9; Q3,* > 0.30) and differential item functioning (item 4; > 0.43 logits between males and females). The final 6-item instrument exhibited improved item separation (ISI = 2.14) and reliability index values (IRI =.82) – suggesting an improved structure – however several limitations such as a prominent ceiling effect were evident (i.e., positive measure targeting coefficient of 0.99 logits). Conclusion: Findings suggest the CD-RISC instrument should be applied in Aboriginal contexts with caution. Further psychometric examination of the CD-RISC with Aboriginal youth is warranted before it can be used with confidence by researchers and clinicians. KEY POINTS What is already known about this topic: Resilience is generally thought of as positive outcomes despite exposure to risk. This can be a particularly important concept to consider in the period of youth and adolescence, when young people are experiencing wide ranging physical, emotional, and social changes and challenges. Aboriginal youth face unique circumstances that are necessary to consider when considering resilience relevant to an Aboriginal perspective. There is currently a lack in the literature in regards to defining and conceptualising resilience from an Aboriginal perspective, particularly relevant to young people. There is a dearth of instruments available that have been rigorously examined for their appropriateness and psychometric properties relating to resilience in Aboriginal youth. What this paper adds: This paper provides not only a first investigation of this version of the CD-RISC using Rasch analysis, but also the first time the CD-RISC's validity and reliability has been assessed for an Aboriginal sample in Australia. Analyses results illustrated a ceiling effect, highlighting the fact that for the instrument to be accessing the full range of resilience in the sample, new items need to be developed to tap into higher levels of resilience. With the findings of this paper as a foundation, further investigation and adaptation of the CD-RISC could potentially lead to a useful screening tool for assessing resilience and identifying Aboriginal youth who may require further support. [ABSTRACT FROM AUTHOR]