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Political Economy at Any Speed: What Determines Traffic Citations?
Speeding tickets are determined not only by the speed of the offender, but also by incentives faced by police officers and their vote-maximizing principals. We hypothesize that police officers issueExpand
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  • Open Access
Endogenous Group Formation via Unproductive Costs
Sacrifice is widely believed to enhance cooperation in churches, communes, gangs, clans, military units, and many other groups. We find that sacrifice can also work in the lab, apart from specialExpand
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  • Open Access
An Agent-Based Model of Mortality Shocks, Intergenerational Effects, and Urban Crime
Rational criminals choose crime over lawfulness because it pays better; hence poverty correlates to criminal behavior. This correlation is an insufficient historical explanation. An agent-based modelExpand
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The Evolution of Power and the Divergence of Cooperative Norms
We consider a model of multilevel selection and the evolution of institutions that distribute power in the form of influence in a group’s collective interactions with other groups. In the absence ofExpand
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Emergent Extremism in a Multi�?Agent Model of Religious Clubs
This paper extends the club model of religion to better account for observed patterns of extremism. We adapt existing models to a multi�?agent framework and analyze the distribution of agents andExpand
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A theory of liberal churches
There is a counterintuitive gap in the club theory of religion. While it elegantly accounts for the success of strict sectarian religious groups in recruitingmembers andmaintaining commitment, it isExpand
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Religion, Clubs, and Emergent Social Divides
Arguments regarding the existence of an American cultural divide are frequently placed in a religious context. This paper seeks to establish that, all politics aside, the American religious divide isExpand
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  • Open Access
Influence of provider and urgent care density across different socioeconomic strata on outpatient antibiotic prescribing in the USA.
OBJECTIVES Despite a strong link between antibiotic use and resistance, and highly variable antibiotic consumption rates across the USA, drivers of differences in consumption rates are not fullyExpand
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  • Open Access
An Agent-Based Model of Centralized Institutions, Social Network Technology, and Revolution
This paper sheds light on the general mechanisms underlying large-scale social and institutional change. We employ an agent-based model to test the impact of authority centralization and socialExpand
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  • Open Access
The determinants of federal and state enforcement of workplace safety regulations: OSHA inspections 1990–2010
We explore the determinants of inspection outcomes across 1.6 million Occupational Safety and Health Agency (OSHA) audits from 1990 through 2010. We find that discretion in enforcement differs inExpand
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