Data and code from: Bivalent impact of social networks on overarming: Insights on the alignment between social and individual interests

Drawing on evolutionary game theory, we present a stylized model of gun acquisition for individuals in a society where all have the right to bear arms. In our dynamic model, pairwise confrontations with attendant payoffs take place between individuals who are either armed or unarmed. Individual payoffs depend on the probability of confrontation, the choice to arm, and the choices of others. We show that the likelihood of confrontation affects the optimal societal arming rate and the arming rate that occurs in equilibrium. The latter quickly surpasses the former as the probability of confrontation increases, a phenomenon we call overarming. This reflects a misalignment of individual and societal interests. We further show that spatial structures can exacerbate overarming, especially when individuals perceive a deteriorating social environment. Our modeling results highlight the importance of understanding how fundamental behavioral dynamics and network heterogeneity influence individu..., , , # **Data and code from: Bivalent impact of social networks on overarming: Insights on the alignment between social and individual interests**

## Associated Manuscript

Fu F, Herron M, and Rockmore D.
**\"Bivalent Impact of Social Networks on Overarming: Insights on the Alignment between Social and Individual Interests\"**\
Accepted for publication in *Science Advances*.

## Overview

This submission contains the code and supporting data needed to reproduce the results and figures associated with the manuscript. The materials include:

* a Wolfram Mathematica notebook for generating figures,
* compiled data files used by the Mathematica notebook,
* C++ code for simulations on real social networks, and
* anonymized network data used in those simulations.

## Software Requirements

* **Wolfram Mathematica 13.0.0.0** (or a compatible later version) is required to open and run `gitResults.nb`.
* A **C++ compiler** is required to compile and run the simulation code in `realnetworksimulations`....,