Background:
Resilience is critical to adolescent mental health, particularly under stress or adversity. While the Brief Resilient Coping Scale (BRCS) has been widely used internationally, a validated Bengali version for adolescents was lacking.

Objective:
This study aimed to transculturally adapt and evaluate a Bengali version of the BRCS among a nationally representative sample of adolescents in Bangladesh, using Classical Test Theory and Item Response Theory methods.

Methods:
With a nationally representative sample of 387 adolescents (aged 14-19), the BRCS was translated and culturally adapted according to International Test Commission guidelines. Analyses included descriptive statistics, internal consistency, exploratory and confirmatory factor analyses (EFA and CFA), Partial Credit Modeling, and known-group validity using the Food Insecurity Experience Scale.

Results:
The scale demonstrated excellent internal consistency (Cronbach’s α = 0.857, McDonald’s ω = 0.87). EFA revealed a unidimensional structure (factor loadings = 0.68-0.83; KMO = 0.819; Bartlett’s χ² = 337.317, p < 0.001), explaining 79.4% of the total variance in resilience coping. CFA supported the one-factor model (CFI = 0.996; RMSEA = 0.063; SRMR = 0.016). The Partial Credit Model demonstrated acceptable item-person targeting, along with acceptable item-level fit statistics. Known-group validity was supported by significant inverse correlations between BRCS scores and food insecurity (r = –0.20, p < 0.01), indicating the scale's sensitivity to material hardship.

Conclusion:
Results indicate a unidimensional measure of resilience for adolescents in Bangladesh, suitable for both research and practice. It holds promise for use in school-based screening, research, and mental health programming targeting resilience in low-resource settings.