Abstract

BASLER, Taritza  and  FREITAS, Clarissa Pinto Pizarro de. Cross-Cultural Adaptation of the Psychosomatic Symptoms Scale into Brazilian Portuguese (PSS-BRA). Paidéia (Ribeirão Preto) [online]. 2025, vol.35, e3532.  Epub Jan 16, 2026. ISSN 0103-863X.  https://doi.org/10.1590/1982-4327e3532.

The psychosomatic approach requires valid instruments to assess physical symptoms influenced by psychological factors. This study aimed to cross-culturally adapt and examine the validity evidence of the Brazilian version of the Psychosomatic Symptoms Scale (PSS-BRA). A total of 546 Brazilian adults participated (age range: 18-76 years, M = 38.7; SD = 13.5). Confirmatory Factor Analysis indicated that a seven-factor oblique structure provided the best fit for both frequency and severity scales, with satisfactory internal consistency (α and ω = .52-.93). The scale demonstrated sex invariance and positive correlations with anxiety symptoms, clinical diagnoses, and self-reported pain levels. These findings provide evidence of factorial validity, convergent validity, and reliability of the PSS-BRA. Overall, the instrument is psychometrically robust and suitable for clinical screening and preventive health interventions in Brazil.

Keywords : psychometrics; statistical validity; psychosomatic medicine.

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