Psychological safety is a "shared belief, held by members of a team, that a group is a safe place for taking risks. It is a sense of confidence that the team will not embarrass, reject, or punish someone for speaking up.”(Amy Edmondson, 1999)

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In 2012, Google found that psychological safety was the most important to making a team succeed, not the smartest teams or the ones who socialized outside the office. Psychological safety is a shared belief that the team is safe for interpersonal risk-taking

Trust is essential to an effective team, because it provides a sense of safety. When your team members feel safe with each other, they feel comfortable to open up, take appropriate risks, and expose vulnerabilities.