The Fearless Organization, by Amy Edmondson

Overview: Psychological Safety is the key determinant of highly effective teams. It is the belief that is is safe to take interpersonal risks. On a team, this means being able to ask questions, make mistakes, challenge the status quo, share your perspective, without fear of blame or retribution. 

Key Takeaway:  In 2012 Google launched a 5 year research endeavor to study effective teams. They concluded that effective teams have five components: Psychological Safety, Dependability, Structure & Clarity, Meaning, and Impact. Interestingly, when you took Psychological Safety away, the other 4 elements lost the significance of their impact. Psychological Safety is the key determinant of highly effective teams.

Bonus Tip: When mistakes happen, avoid blame. Focus on resolving the issue, and use it as an opportunity for learning and future improvement. 

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https://fearlessorganization.com/the-fearless-organization