Perceptions of Complex Systems Are Governed by Power Laws
  Many networks in natural and human-made systems exhibit scale-free properties and are small worlds. Now we show that people's understanding of complex systems in their cognitive maps also follow a scale-free topology. People focus on a few attributes, relating these with many other things in the system. Many more attributes have very few connections. People use relatively short explanations to describe events; their cognitive map is a small world with less than six degrees of separation. These findings may help us to better understand people's perceptions, especially when it comes to decision-making, conflict resolution, politics and management. 
Uygar Ozesmi