Lovers’ creativity sparks under stress: fNIRS hyperscanning evidence of dating couples’ creative problem-solving under stress

In an age flooded with pressure, lovers' resilience under stress and ability to creatively solve problems are highly valued. It is hoped that stress could become the crucible that forges lovers' creative sparks. Understanding the associations among romantic love, stress and advanced cognitive functions is highly topical. Using functional near-infrared spectroscopy (fNIRS) hyperscanning, the current study investigated dating couples' creative problem-solving performance under the effect of acute stress and the corresponding underlying neural mechanism. Results indicated that when faced with stressful situations, couples showed higher fluency and flexibility in creative problem-solving than those under non-stressful conditions. In addition, the couples showed greater synchronization in the frontopolar region under stress, with the direction from males to females, unveiling a distinct cooperative pattern of males leading and females receiving. Furthermore, interpersonal brain synchronization (IBS) mediated the effects that both salivary cortisol and heart rate level had on dating couples' creativity. These findings provide evidence supporting an integrative view for understanding relationships under adverse conditions, highlighting the different roles played by different genders in coping with stress.