BACKGROUND Previous literature has shown that personality is one of the most important predictors of Subjective Wellbeing. However, the mechanisms through which basic personality dispositions contribute to wellbeing have scarcely been explored. Therefore, in this study we examined the mediating role of Optimism in the relationship between the Big Five personality model (both factors and facets) and Subjective Wellbeing. Additionally, we assessed whether the results varied by sex. METHOD A sample of 611 Spanish adolescents completed self-report measures of BFQ, LOT-R, and SHS. We conducted structural equation modeling to test the proposed mediating models. RESULTS Optimism completely mediated the relationship between Extraversion and Emotional Stability factors and Subjective Wellbeing. Likewise, Optimism mediated the relationship between the personality facets Politeness, Perseverance, Emotion control, Impulse control, and Dynamism and Subjective Wellbeing. The findings were invariant by sex. CONCLUSIONS These results provide help in identifying the possible mechanisms through which basic dispositions of personality contribute to wellbeing. These findings can be used to develop interventions that target the promotion of greater Subjective Wellbeing through Optimism, and thereby improve adolescents' adjustment.

中文翻译：

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大五和主观幸福感：乐观主义的中介作用。

背景 先前的文献表明，个性是主观幸福感最重要的预测因素之一。然而，基本人格倾向促进幸福的机制几乎没有被探索过。因此，在本研究中，我们检验了乐观主义在大五人格模型（包括因素和方面）与主观幸福感之间的关系中的中介作用。此外，我们评估了结果是否因性别而异。方法 611 名西班牙青少年样本完成了 BFQ、LOT-R 和 SHS 的自我报告测量。我们进行了结构方程建模来测试提出的中介模型。结果 乐观完全调节了外向性和情绪稳定因素与主观幸福感之间的关系。同样地，乐观调节了礼貌、毅力、情绪控制、冲动控制、活力和主观幸福感等人格方面之间的关系。研究结果不随性别而变化。结论 这些结果有助于确定基本人格倾向促进幸福的可能机制。这些发现可用于制定干预措施，旨在通过乐观主义促进更大的主观幸福感，从而改善青少年的适应能力。