 A meta-analysis was performed to determine whether there is a consistent improvement in team effectiveness using debriefing techniques.Meta-analysis are statistical researching technique that include data from findings of all prior studies and are considered to be more reliable than findings that are derived from a single study.This one fully supports the idea that debriefing is a key component of successful project team management.Debriefings are most effective when conducted interactively between the participants of the immersive activity and the assessment or observation personnel.