Schelling's Segregation Model
Updated 2026-08-02
INTRODUCTION
English translation pending.
CORE DEFINITION
Developed by the economist Thomas Schelling in the late 1960s using coins on a chessboard, the model gives each agent only a weak preference, such as wanting at least a third of its neighbors to be similar, and no hostility toward others. Repeated relocation then drives the grid toward near-total separation. The result demonstrates that extreme aggregate outcomes can arise from modest individual tastes, so remedies must change structure rather than merely preach tolerance.
SCAFFOLDING EFFECT
Reduce cognitive load
- Separate levels: judge individual motives and collective outcomes as different things - Fix the structure: change rules and physical arrangements rather than lecturing people about tolerance - Run the simulation: ask what repeated local moves will produce before blaming anyone's character
Anchor fast decisions
Each household moves only when its local mix falls below a modest threshold, so a few departures push others past the same threshold. The moves cascade, and a mild preference produces a grid that looks as though it came from strong prejudice. The mechanism is amplification through feedback, not intent.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Thomas_Schellingverified
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