Nudge · 2-minute read
Groups usually make people coast — except when the team’s result depends visibly on the weakest contributor. Then that person works harder than they would alone.
Social loafing is well known: when individual effort is pooled into an average, people ease off. The Köhler effect is its mirror. When the group can only succeed if every member delivers — and everyone can see each contribution — the least capable member often lifts their effort substantially.
A meta-analysis found a large effect. The lesson for managers: disengagement is often a design problem, not a character problem.
The research: Weber & Hertel (2007), Journal of Personality and Social Psychology — meta-analysis of 26 studies.
Adapted from Nudges at Work by Tareef Jafferi, shared in partnership with Happily.ai.
Feedback makes performance worse surprisingly often. Whether it was positive or negative barely matters — what matters is whether it points attention at the work or at the person.
Copying the boss “just in case” looks like transparency. It’s really a symptom of fear — and leaders can cure it one reply at a time.
Unfinished tasks keep tugging at your attention — but you don’t have to finish them to make the tug stop. Writing a specific plan does almost as much.