Detecting a copycat effect in school shootings using spatio‐temporal panel count models

Karsten Schweikert, Manuel Huth and Mark Gius

Contemporary Economic Policy, 2021, vol. 39, issue 4, 719-736

Abstract: School shootings are often motivated by the perpetrators' desire for media attention and notoriety. As school shootings receive intense regional and national media coverage, a high likelihood for copycat attacks can be expected. We investigate whether a copycat effect can be detected in US state‐level school shooting data from 1990 to 2017. We do so by estimating spatio‐temporal panel count models and control for socio‐economic characteristics, as well as state and Federal gun control laws. Positive spatial and temporal dependence indicate that the risk for additional school shootings in the same and neighboring states increases after the initial attack.

Date: 2021
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https://doi.org/10.1111/coep.12532

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