Department of Psychology, Sungkyunkwan University, Seoul 03063, South Korea.
Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon 16419, South Korea.
Soc Cogn Affect Neurosci. 2023 Oct 4;18(1). doi: 10.1093/scan/nsad047.
Grit is a personality trait that encapsulates the tendency to persevere and maintain consistent interest for long-term goals. While prior studies found that grit predicts positive behavioral outcomes, there is a paucity of work providing explanatory evidence from a neurodevelopmental perspective. Based on previous research suggesting the utility of the functional connectome (FC) as a developmental measure, we tested the idea that individual differences in grit might be, in part, rooted in brain development in adolescence and emerging adulthood (N = 64, 11-19 years of age). Our analysis showed that grit was associated with connectome stability across conditions and connectome similarity across individuals. Notably, inter-subject representational similarity analysis revealed that teenagers who were grittier shared similar FC architecture with each other, more so than those with lower grit. Our findings suggest that individuals with high levels of grit are more likely to exhibit a converging pattern of whole-brain functional connectivity, which may underpin subsequent beneficial behavioral outcomes.
坚毅是一种人格特质，它包含了为长期目标而坚持和保持持续兴趣的倾向。虽然之前的研究发现坚毅可以预测积极的行为结果，但从神经发育的角度提供解释性证据的研究很少。基于先前的研究表明功能连接组（FC）作为一种发育测量的效用，我们测试了这样一种观点，即坚毅的个体差异可能部分源于青少年和成年早期的大脑发育（N=64，年龄在 11 至 19 岁之间）。我们的分析表明，坚毅与条件下的连接组稳定性和个体间的连接组相似性有关。值得注意的是，主体间代表性相似性分析表明，坚毅程度较高的青少年彼此之间的 FC 结构更为相似，而坚毅程度较低的青少年则不那么相似。我们的研究结果表明，具有较高坚毅水平的个体更有可能表现出全脑功能连接的趋同模式，这可能为后续的有益行为结果提供基础。
