The Ringelmann Effect

The Ringelmann Effect states that as more people work together, individual effort decreases. In software teams, productivity per person often declines in larger groups due to coordination overhead and some individuals contributing less when in a crowd.

This effect warns that adding team members can make each existing member less efficient. Along with Brooks’s Law, it shows that teamwork doesn’t scale linearly. Teams must be structured to mitigate this with clear roles and small, focused groups.

• In large teams, some people put in less effort because they assume others will pick up the slack or because their contributions are less visible.
• More people mean more communication, meetings, and alignment needed. Time spent coordinating increases, leaving less time for actual work.
• There is a point at which adding people yields diminishing returns, or even negative returns per person. Small, focused teams often outperform poorly coordinated larger teams.
• Smaller teams or individuals feel greater ownership and responsibility.