Yoo Jaehoon, Kim Boyoon, Park Sujin, Jeon Jeewon, Yoo Chaebin, Kim M Justin, Park Daeun
Department of Psychology, Sungkyunkwan University, Seoul, South Korea.
Department of Cognitive Science, University of California San Diego, La Jolla, California, USA.
Psychophysiology. 2025 May;62(5):e70064. doi: 10.1111/psyp.70064.
Grit is a personality trait, conceptualized as perseverance of effort and consistency of interests in long-term goals. Previous research has shown that grit is associated with various positive outcomes, including well-being. Despite extensive research on grit, most studies relied on self-reported measures rather than objective measures. To address this gap, our study investigated the relationship between grit and physiological responses, focusing on resting-state heart rate variability (HRV)-a physiological marker of well-being and adaptability. Additionally, we examined whether this relationship was unique to grit and not explained by other related psychological constructs (i.e., conscientiousness and self-control). A total of 206 healthy college students participated in this study (M = 21.03, SD = 2.48, age range = 18-33; 111 women). Results of hierarchical regression analyses showed that grit significantly predicted resting-state HRV measures (i.e., RMSSD, SDNN, and HF) even after controlling for conscientiousness, self-control, age, gender, and respiration rate. These findings suggest that grit may play an important role in maintaining improved biological responses in daily life, beyond the effects of neighboring constructs.
毅力是一种人格特质，被概念化为在追求长期目标时的努力坚持和兴趣的一致性。先前的研究表明，毅力与包括幸福感在内的各种积极结果相关。尽管对毅力进行了广泛研究，但大多数研究依赖自我报告的测量方法而非客观测量方法。为了弥补这一差距，我们的研究调查了毅力与生理反应之间的关系，重点关注静息状态心率变异性（HRV）——一种幸福感和适应能力的生理指标。此外，我们还研究了这种关系是否是毅力所特有的，而不是由其他相关心理构念（即尽责性和自我控制）所解释的。共有206名健康大学生参与了本研究（M = 21.03，SD = 2.48，年龄范围 = 18 - 33岁；111名女性）。分层回归分析结果表明，即使在控制了尽责性、自我控制、年龄、性别和呼吸频率之后，毅力仍能显著预测静息状态HRV测量值（即RMSSD、SDNN和HF）。这些发现表明，除了相邻构念的影响之外，毅力可能在维持日常生活中改善的生理反应方面发挥重要作用。
