Personality traits like Neuroticism and Extroversion, Satisfaction With Relationships, and
Attachment Security are among the most important predictors of subjective well-being (SWB).
However, the relative contribution of these predictors to SWB is seldom tested, and even more
rarely tested cross-culturally. In this study, we replicate and extend Galinha, Oishi, Pereira,
Wirtz, and Esteves, aiming to identify the strongest predictors of SWB, and in what way that
contribution is universal or culture-specific, across such collectivist-individualist countries as
India, Sweden, and the United States (N = 1,622). Structural equation modeling showed that
Satisfaction With Relationships is a stronger predictor of SWB in India, while Neuroticism is
a stronger predictor of SWB in Sweden and the United States, results consistent with prior
Portuguese and Mozambican samples. These findings suggest that Satisfaction With Relationships
is probably a stronger predictor of SWB in more collectivistic and less developed countries, while
low Neuroticism is a stronger predictor of SWB in more individualistic and highly developed
countries. Across all samples, Attachment Security and Extroversion showed very weak or
nonsignificant effects on SWB above the contribution of Neuroticism and Satisfaction With
Relationships, consistent with prior results. Neuroticism significantly mediated the relationship
between Attachment Security, SWB, and Satisfaction With Relationships.
