人类有一种与他人建立联系的自然倾向，这在恋爱关系中得到了更充分的证明(Acevedo et al., 2012; Fletcher et al., 2015)，在这种类型中的人际关系中，男女双方都有大量的社会互动。例如分享积极的小事儿和接收高质量的反馈(Gable et al., 2003,2004)。在大多数情况下情侣具有相同的目标(Li et al., 2002; Li and Kenrick, 2006)，这使得他们的活动发生了同步。
本次研究发现右上额叶皮层被显著激活。右上额叶皮层涉及对他人行为的内隐理解，反应抑制和工作记忆，本次结果为心智理论假说提供了支持(Cui et al., 2012; Yang et al.,2015)。此外，我们发现女性到男性的脑间同步性高于男性到女性的脑间同步性，这说明主要信息是从女性流向男性的。这个结果暗示了女性在任务中‘领导’男性，男性在任务中更多的是表现为跟随者的角色。这个结果也和进化心理学的理论一致(Griskevicius et al., 2006; Hyde, 2014).。
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