The phrase "group interaction" refers to how people behave and communicate with each other when they are together in a group. It involves sharing ideas, listening to others, and working together towards a common goal. Full definition
This was set up on a small group, modified - therapy basis, recognizing that the most efficient way of acquiring depth understanding of group interaction is to experience such interaction under supervision. (religion-online.org)
There is a focus on teaching skills not only within subject areas but in group interaction whilst solving real, practical problems. (educationbusinessuk.net)