University of Jyväskylä studies why some people instantly “click” – the science of bodily synchrony

Researchers at the University of Jyväskylä are investigating the phenomenon of bodily synchrony, where people’s movements, expressions, and physiological responses unconsciously align, reports Finnish broadcaster Yle. The study explores how this subconscious connection influences relationships and conflict resolution.

The research, led by Anu Tourunen, examines how two people’s bodies synchronize during conversation. Participants discuss everyday topics while sensors measure their alertness, heart rate, and breathing. Cameras record their movements and facial expressions for further analysis.

Tourunen describes bodily synchrony as a “sixth sense of interaction,” noting it has been studied far less than verbal communication. “Synchrony affects how conflicts are resolved and how successful relationships are,” she explains. However, it can also amplify negative emotions—such as during arguments—escalating tensions.

Friends Elisa Peltokangas and Selja Salomaa, who participated in the study, reported feeling closer afterward. “It made me realize how important she is to me,” Salomaa said. Peltokangas added that, despite the cameras, the conversation eventually felt natural, as if they were alone.

The university is recruiting adult volunteers, who can participate either with a familiar partner (known for at least a year) or be paired with a stranger. Tourunen suggests synchrony might sometimes be stronger with unfamiliar people, as interactions require more conscious effort.

Previous research by Tourunen found that synchrony between couples increased during therapy, correlating with improved well-being in women. The current study aims to uncover how individual traits, relationship quality, and interaction contexts shape bodily synchrony.