The increase of interest in well-being is reflected in the expansion of research in the late 1990s. This led to two theoretical directions, different models and several well-being assessments measures. Through this, we gained a lot of insights but also some ambiguities regarding exact definitions and operationalization of well-being, and the abundance of different well-being measures, assessing different well-being aspects. In this thesis, we wanted to present the well-being concept, prepare an overview of appropriate well-being measures, translate some of them into Slovene language and check the psychometric properties of the translations. This research describes the adaptation of the SPANE Scale of positive and negative experiences (Diener et al., 2009), Eudaimonic well-being questionnaire QEWB (Waterman et al., 2010), FS Flourishing scale (Diener et al., 2009) and the Pemberton happiness index PHI (Hervas and Vazquez, 2013). Data were collected online and in a sample of 274 participants (74 % women) with an average age of 38 years, the fit of theoretically predicted factor models was tested using CFA. The results show a satisfactory fit of most of the original models, one-factor for FS and PHI, and two-factor for SPANE. We couldn't confirm the predicted one-factor solution for QEWB, but a four-factor solution gives a satisfactory fit, however, in the future, a review and change of problematic items (3 and 8) will be required, or if necessary, exclusion of an item. All four measures showed high internal consistency. We confirmed the construct validity of all measures through correlations with related measures (mental well-being, depression), demographic variables (gender, age, marital status and education) and basic personality traits. We confirmed the adequacy of the FS, SPANE and PHI translations, and also identified shortcomings of QEWB. With the findings of this research, we enriched the Slovene research field with new theoretically supported measures of well-being.
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