Skip to 0 minutes and 11 secondsHere we have a NetLogo model of Thomas Schelling's segregation model. NetLogo is freely downloadable, and I strongly recommend downloading NetLogo and playing for yourself with the same models. The segregation model is based on the population living in a square grid, and it is composed of green and red agents. Now, each of the agents has a preference of living in a neighbourhood with a slight majority of their own kind. Here, we put it at 60%, so the green ones over here are not satisfied because they're living in an environment dominated by red ones. They'd prefer to move to a region where there are more greens. Let's see what happens when this model starts running.

Skip to 1 minute and 15 secondsWe see that they are relocating and that they are clustering.

Skip to 1 minute and 24 secondsWhat emerges here is neighbourhoods that are really homophilous, or completely similar, concerning their colour, whereas if you are aware of the percentage, it's only a slight majority of their own kind that they prefer. This micro level preference results in a much more complete separation on a macro level. This is typically the emergence of separation due to individual behaviour.

Agent based model 2: Emergence of social segregation

This lecture goes through a simulation of Schelling’s model of segregation demonstrated in software called NetLogo.

Wander Jager recommends to download and try Agent Based Modeling yourself with NetLogo. We will explain how to do this a few steps from now. Remember - to download, install and play with NetLogo is optional (and recommended) but not an essential part of this course.

Check out our extra section Getting your Hand Dirty with Agent Based Models further on in this week if you want to work with Netlogo.

Extra: You can also open this model in your browser:

Open this NetLogo model in your browser

(Credits go to our fellow student Georgios Papadopoulos for pointing this out)

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Decision Making in a Complex and Uncertain World

University of Groningen

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