Amy Edmondson's research focuses on the impact of psychological safety (or the lack of it) on team and organizational performance. The questionnaires developed by her that are used to measure the level of psychological safety in organizations have been proven to correlate strongly to team performance.
You can get started by measuring the level of psychological safety of a team with a one-time Fearless Organization Scan. You receive an anonymous Psychological Safety Index report (example report) that shows how the team stacks up against the global benchmark data.