Previous studies have consistently found that hedonic and eudaimonic motives positively predict subjective well-being. In this study, we emphasized the importance of considering curvilinear effects alongside main effects and interactions to fully understand these relationships. Using polynomial regression models, we examined the relationships between hedonic motives, eudaimonic motives, and subjective well-being. To examine both trait-level and momentary-level relations with well-being, we used experience sampling methodology to collect real-time data from 161 participants over a 7-day period. Our findings suggested that engaging in activities towards fulfilling both motives was associated with positive experiences, and individuals with high levels of hedonic and eudaimonic motives in their daily lives generally reported higher subjective well-being. Nevertheless, we also identified negative interaction effects between both motives on subjective well-being, which imply that there may be a limit to the positive contributions of combinations of both motives to subjective well-being. We discuss the implications of our findings for understanding the nuanced relationships between hedonic and eudaimonic motives and subjective well-being.

以前的研究一致发现，享乐和享乐动机可以积极预测主观幸福感。在这项研究中，我们强调了将曲线效应与主效应和交互作用一起考虑以充分理解这些关系的重要性。使用多项式回归模型，我们研究了享乐动机、真心动意和主观幸福感之间的关系。为了检查特质水平和瞬间水平与幸福感的关系，我们使用体验抽样方法在 7 天内收集了 161 名参与者的实时数据。我们的研究结果表明，参与实现这两种动机的活动与积极的体验有关，在日常生活中具有高度享乐和幸福动机的人通常报告了更高的主观幸福感。尽管如此，我们还发现了两种动机对主观幸福感的负面交互作用，这意味着两种动机的组合对主观幸福感的积极贡献可能存在限制。我们讨论了我们的发现对理解享乐和享乐动机与主观幸福感之间的微妙关系的意义。