An international research team suggests that humans are hardwired to favor leaning to the right while kissing their romantic partners, which may have wider implications for neuroscience and cognitive sciences.
According to the new academic study published in the journal Scientific Reports, over two–thirds of the kiss initiators and the recipient of the kiss have a bias to turn their heads to the right and men were about 15 times more likely than women to initiate kissing.
The new research suggests that the act of kissing is determined by the brain splitting up tasks to its different hemispheres. Different hormone levels in each hemisphere and neurotransmitters might be unevenly distributed to each hemisphere as giving rise to a bias to turn right, researchers say.
Psychologists and neuroscientists at the universities of Bath Spa and Dhaka, Bangladesh, invited 48 married couples to kiss privately in their own homes, and after kissing they were asked to go to different rooms, open an envelope and then report on various aspects of the kiss independently of each partner.