Happiness in Italy: Translation, Factorial Structure and Norming of the Subjective Happiness Scale in a Large Community Sample
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The Subjective Happiness Scale (SHS) is one of the most commonly used measures of happiness. Many translations and validation studies have been carried out in different countries and languages. The aim of the current paper was to investigate the psychometric properties of the Italian translation of the SHS and to provide normative data. The SHS was administered with life satisfaction items, anxiety and depression scales to a community sample of 993 participants, aged 18–85 years, living in different parts of Italy. Age and gender distributions were stratified according to the population pyramid. Confirmatory Factor Analysis supported the unidimensionality of the SHS, with acceptable fit indexes (NNFI = .96; CFI = .99; RMSEA = .08; 95 % C.I. [.04–.12]). Multi-group analyses supported total invariance of the SHS measurement model for males and females, and partial invariance for younger (i.e., 18–44 years old) and older (i.e., 45–85 years old) participants. Significant correlations with satisfaction items, anxiety and depression provided evidence for concurrent validity. These findings showed that the Italian SHS translation is a reliable and valid tool, which adds to existing translations and validation studies in different countries and languages.
KeywordsSubjective happiness Confirmatory factor analysis Reliability Validity Normative data Italy
The authors discussed the contents of this article together. Luca Iani and Marco Lauriola equally contributed to study design, and data analysis and interpetation. Kristin Layous and Saulo Sirigatti provided a significant contribution to data interpretation and manuscript revision. The final version of the manuscript was written by Luca Iani, Marco Lauriola, and Kristin Layous. Thanks to Giulia Giordano, Lucia Lamberti, Maddalena Mealli, Giulia Pace, Sara Pompili, Teresa Roma, Valentina Sardiello, and Cinzia Valeo for helping collecting data. Thanks to Barbara Antonucci and Victoria Bailes for having taken care of translations-backtranslation procedures.
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