Former Vice President Joe Biden has always been a physically affectionate man, but recently that touching has become controversial. We turn to experts in social and personality psychology to help us understand what is going on.
Our experts suggested that at least seven different psychological processes may be at play:
1. Touch signals caring and support: The role of the need to belong
There is no evidence that ethnic minorities are more sensitive than other groups to supposedly trivial insults or invalidations, they just experience them more often, research from Goldsmiths, University of London shows.