Cooperation and Contagion in Web-Based, Networked Public Goods Experiments
2011

Cooperation in Networked Public Goods Experiments

Sample size: 113 publication 10 minutes Evidence: moderate

Author Information

Author(s): Suri Siddharth, Watts Duncan J.

Primary Institution: Yahoo! Research

Hypothesis

Does network topology affect cooperation in public goods games?

Conclusion

Network topology had no significant effect on average contributions in public goods games.

Supporting Evidence

  • Participants played a local public goods game arranged on five network topologies.
  • Network topology had no significant effect on average contributions.
  • Players behaved like conditional cooperators but were influenced by both high and low contributing neighbors.
  • Positive effects of cooperation were only contagious to direct neighbors.

Takeaway

The way people work together in groups doesn't change much based on how those groups are connected.

Methodology

Participants played a public goods game arranged on five different network topologies.

Potential Biases

Potential biases from self-selection of participants on the Amazon Mechanical Turk platform.

Limitations

The study may not generalize to all types of networks or public goods games.

Participant Demographics

{"gender":{"male":61.8,"female":35.5,"did_not_answer":2.7},"average_age":32,"education":{"high_school":21.1,"associates":9.2,"bachelors":42.1,"masters":18.4,"doctorate":3.9,"professional":3.9,"did_not_answer":1.4},"race":{"asian":26.3,"black_or_african_american":1.3,"american_indian_or_alaskan_native":0.7,"white":69.7,"did_not_answer":2.0},"marital_status":{"divorced":4.6,"now_married":42.1,"never_married":49.3,"separated":2.0,"did_not_answer":2.0},"income":{"under_10k":13.8,"10k_to_20k":13.2,"20k_to_30k":9.9,"30k_to_40k":12.5,"40k_to_50k":15.1,"50k_to_60k":7.2,"60k_to_70k":5.3,"70k_to_80k":4.6,"80k_to_90k":2.0,"90k_to_100k":2.6,"100k_to_150k":6.6,"over_150k":5.9,"did_not_answer":1.4}}

Statistical Information

P-Value

p>0.05

Statistical Significance

p>0.05

Digital Object Identifier (DOI)

10.1371/journal.pone.0016836

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