Southwest University, Chongqing, China.
Beijing Normal University, China.
Pers Soc Psychol Bull. 2022 Sep;48(9):1382-1392. doi: 10.1177/01461672211040677. Epub 2021 Aug 18.
Procrastination adversely affects individual's learning, working, health, and well-being, which troubles many people around the world. Previous studies have indicated that people with higher achievement motivation tend to have less procrastination. However, how achievement motivation is linked with procrastination at the neural level is still poorly understood. Here, we adopted the voxel-based morphometry (VBM) and resting-state functional connectivity (RSFC) methods to study this issue. The VBM analysis revealed that higher achievement motivation was correlated with larger gray matter volumes in left precuneus (lPre). Furthermore, the RSFC results showed that the functional connectivity between lPre and right anterior cingulate cortex (rACC) was positively associated with achievement motivation and negatively correlated with procrastination. More importantly, a mediation analysis demonstrated that achievement motivation fully mediated the relation between lPre-rACC connectivity and procrastination. These findings suggested that lPre-rACC coupling might be the neural correlate underlying the association between achievement motivation and procrastination.
拖延对个人的学习、工作、健康和幸福感都有不利影响，这困扰着全世界许多人。先前的研究表明，成就动机较高的人往往拖延较少。然而，成就动机如何与神经层面的拖延联系起来，人们仍知之甚少。在这里，我们采用基于体素的形态测量学（VBM）和静息态功能连接（RSFC）方法来研究这个问题。VBM 分析显示，较高的成就动机与左楔前叶（lPre）的灰质体积增大有关。此外，RSFC 结果表明，lPre 与右侧前扣带回皮质（rACC）之间的功能连接与成就动机呈正相关，与拖延呈负相关。更重要的是，中介分析表明，成就动机完全介导了 lPre-rACC 连接与拖延之间的关系。这些发现表明，lPre-rACC 耦合可能是成就动机与拖延之间关联的神经基础。
