Honesty, structure with a good understanding and nurturing leader, openness to ideas and constructive criticism
My last position was a great environment for psychological safety, there was always time during our meetings where we were all given an opportunity to speak or voice our ideas. Ideas were not shut down immediately and were embraced and bounced off each other to come up with a final conclusion. People on our teams were understanding of skill level when others were
They have a positive impact on the company, allowing for more efficient work, ideas and pyschologically safe and healthy members.
References
What Google Learned From Its Quest to Build the Perfect Team