Gооgle's internаl Prоject Aristotle combined lаrge-scаle performance data with structured team interviews across many internal teams to identify what makes teams effective. The widely-reported key finding: psychological safety — team members feeling safe to take risks and be vulnerable with each other — predicted team effectiveness more strongly than any other factor, including individual talent. Project Aristotle's widely-reported key finding was that team effectiveness was most strongly predicted by: