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Related Experiment Video

Updated: Jun 28, 2025

A Laboratory Method to Measure Contagious Yawning in Rats

A Laboratory Method to Measure Contagious Yawning in Rats

Published on: June 14, 2019

Long ties accelerate noisy threshold-based contagions.

Dean Eckles¹, Elchanan Mossel², M Amin Rahimian³

¹Sloan School of Management, Massachusetts Institute of Technology, Cambridge, MA, USA. eckles@mit.edu.

Nature Human Behaviour

|April 22, 2024

Summary

This summary is machine-generated.

Random network rewiring accelerates contagion spread in noisy threshold models, contrary to previous findings. This discovery harmonizes network structure effects on contagion dynamics.

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Area of Science:

Network Science
Epidemiology
Sociology

Background:

Biological contagion models often show random rewiring accelerates spread.
Threshold-based contagions were previously thought to spread faster on clustered networks.

Purpose of the Study:

To investigate how network structure influences the spread of threshold-based contagions.
To reconcile conflicting findings on network rewiring and contagion dynamics.

Main Methods:

Analysis of spread rate on circular lattices with rewired edges.
Simulations on empirical networks with varying rewiring probabilities and adoption reversibility.

Main Results:

Minor modifications to threshold models reverse previous findings.
Random rewiring accelerates spread in noisy threshold contagions with low adoption probability.
Results hold for partial rewiring, reversible decisions, and high-dimensional lattices.

Conclusions:

Network structure's impact on contagion is model-dependent.
Noisy threshold models exhibit accelerated spread with random rewiring.
Findings harmonize understanding of network topology and contagion dynamics.