Spanish version of the personal experience of aging scale: psychometric analyses from classical and network psychometrics approaches in a Chilean sample

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Abstract Background How people experience aging is linked to health, well-being, and engagement in later life, but Spanish-language measures for capture self-perceptions of aging in Latin America remain limited. Objective To adapt the Personal Experience of Aging Scale (PEAS) into Spanish and evaluate its psychometric properties in Chilean adults aged 50 and older. Methods The instrument was translated into Spanish, and content validity was examined by expert judges. Two independent community samples from Chile (exploratory sample: N = 207; confirmatory sample: N = 361) completed the PEAS. Dimensionality was examined using factor-analytic and network-based approaches, followed by confirmatory testing. Reliability, convergent/discriminant validity, measurement invariance across age groups (