I. INTRODUCTION
Team is a primary mechanism for completing organizational tasks. According to [12], there are two advantages to use of teams. First, teamwork can authorize people to employ their abilities, which have connection with ambition and team cohesiveness. Second, team managers can focus on strategic issues rather than supervising team members. Therefore, the team becomes important mechanism in organizational operation [16]. Teams amplify effectiveness in organizations for finishing tasks and make teamwork reach the goal. Katzenbach and Smith showed the discipline of teams is a result of the collective performance of a team, which exceeds the sum of performance of individual members. In other words, team and performance are inseparable [8]. Team performance is the record of outcome achieved in carrying out a specified work aspect during a specified term. In particular, psychological safety is imperative for performance in a team.