In 2015, Google did a study where they discovered that the #1 factor for team performance and success had little to do with talent or IQ. The #1 factor for teams was psychological safety.
“Psychological safety is a belief that one will not be punished or humiliated for speaking up with ideas, questions, concerns or mistakes.”Amy EdmondsonHarvard Business School Professor
When teams felt psychologically safe, collaboration could happen. Without it, it was a struggle.
One way that I’ve seen to help establish psychological safety with teams, is to have a dialogue prior to a project called a “norming session.”