‘Research finds that wisdom is a matter of both heart and mind’, https://uwaterloo.ca/news/news/research-finds-wisdom-matter-both-heart-and-mind, University of Waterloo (April 7, 2016).

Heart rate variability

Research shows that wise reasoning is not exclusively a function of the mind and cognitive ability (…). People who have greater heart rate variability and who are able to think about social problems from a distanced viewpoint demonstrate a greater capacity for wise reasoning. (…) To channel their cognitive abilities for wiser judgment, people with greater heart rate variability first need to overcome their egocentric viewpoints.