The psychometric properties of the Italian Satisfaction with Life Scale (SWL-3): Relationship to mental well-being and distress - Attila Szabo (Autor); Paolo Soraci (Autor); Patrycja Uram (Autor); Renato Pisanti (Autor); Sebastian Skalski-Bednarz (Autor) (2026)
10.13133/2724-2943/19231
https://rosa.uniroma1.it/rosa04/psychology_hub/article/view/19231/17457
Oryginalny artykuł naukowy
Background: Happiness and life satisfaction are core dimensions of subjective well-being. The 3-item Satisfaction With Life Scale (SWLS-3) was developed as a brief alternative to the original 5-item SWLS (SWLS-5) but lacks validation in Italian samples. Objective: To evaluate the psychometric properties, reliability, and construct validity of the Italian SWLS-3 versus the SWLS-5. Methods: A community sample of 504 Italian adults (Mage = 35.15, SD = 12.31; ~82% female) completed the SWLS-5, SWEMWBS, and DASS-12 online. Confirmatory factor analyses examined unidimensionality; internal consistency employed Cronbach's α and McDonald's ω. Convergent and discriminant validity were tested via correlations and HTMT ratios. Results: Both scales showed excellent fit; the SWLS-3 was slightly superior (CFI = 0.972, RMSEA = 0.069) to the SWLS-5 (CFI = 0.963, RMSEA = 0.070). Reliability was high for both (α = 0.881-0.897; ω = 0.876-0.896). The SWLS-3 correlated strongly with the SWLS-5 (r = .949), positively with mental well-being (r = .654), and negatively with distress (r = −.483). HTMT values supported discriminant validity. Conclusion: The Italian SWLS-3 demonstrates excellent psychometric performance and is recommended as a time-efficient screening tool in clinical and large-scale epidemiological research, though some researchers may still prefer the full version.
Keywords: psychologia