Vera-Villarroel, PabloCelis-Atenas, KaremUrzúa, AlfonsoSilva, JaimeContreras, DanielaLillo, Sebastián2018-08-102018-08-102016Revista Argentina de Clínica Psicológica, 2016, vol. 25, n° 2, pp. 195-202http://hdl.handle.net/11447/2143Using a cross-sectional non-experimental design, the mediating role of (positive and negative) affects was assessed in the relation between optimism and well-being (subjective and psychological). A total of 421 people aged between 18 and 60 years with no diagnosed mental pathology participated in this study. Each participant responded to a set of questionnaires (optimism, happiness, satisfaction with life, psychological well-being, positive and negative affect). The relations between the variables are what was expected theoretically: optimism and well-being are correlated negatively with negative affect and positively with positive affect. The indicators of fit are moderate and show the relation between optimism and well-being (subjective and psychological) mediated by the affects. Therefore, optimism could be considered a promoter of the levels of people's well-being, with this relation being mediated by the affects. The results obtained contribute to the explanatory models of well-being based on internal variables.enOptimismSubjective well-beingPsychological well-beingAffectArticle