The Spread of Inequality
2011

How Socioeconomic Stratification Spread

publication Evidence: moderate

Author Information

Author(s): Deborah S. Rogers, Omkar Deshpande, Marcus W. Feldman

Primary Institution: Stanford University

Hypothesis

The spread of socioeconomic stratification may have been a result of cultural change via demic diffusion.

Conclusion

Stratified societies spread more rapidly and were better able to survive resource shortages compared to egalitarian societies.

Supporting Evidence

  • Stratified societies were more likely to migrate and fill unoccupied sites quickly.
  • Egalitarian societies experienced fewer demographic crises and extinctions.
  • Stratified populations showed greater demographic instability in constant environments.

Takeaway

This study shows that societies with inequality can grow and spread faster than those that are equal, especially when resources are scarce.

Methodology

The study used agent-based simulations to model demographic consequences of resource distribution in stratified societies.

Potential Biases

Potential biases in the simulation parameters and assumptions about resource allocation.

Limitations

The model does not account for all cultural and environmental factors influencing societal development.

Statistical Information

P-Value

p<0.05

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1371/journal.pone.0024683

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