The internet effects on sex crime and murder - evidence from the broadband internet expansion in Germany


Nolte, André


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URL: https://ub-madoc.bib.uni-mannheim.de/43664
URN: urn:nbn:de:bsz:180-madoc-436641
Document Type: Working paper
Year of publication: 2017
The title of a journal, publication series: ZEW Discussion Papers
Volume: 17-050
Place of publication: Mannheim
Publication language: English
Institution: Sonstige Einrichtungen > ZEW - Leibniz-Zentrum für Europäische Wirtschaftsforschung
School of Law and Economics > VWL, Quantitative Finanzwissenschaft (Peichl 2013-2017)
MADOC publication series: Veröffentlichungen des ZEW (Leibniz-Zentrum für Europäische Wirtschaftsforschung) > ZEW Discussion Papers
Subject: 330 Economics
Classification: JEL: K42 , H40 , L96 , C26,
Keywords (English): Crime , broadband internet , media
Abstract: This paper studies the effects of the introduction of a new mass medium on criminal activity in Germany. The paper asks the question of whether highspeed internet leads to higher/lower sex crime offences and murder. I use unique German data on criminal offences and broadband internet measured at the municipality level to shed light on the question. In order to address endogeneity in broadband internet availability, I follow Falck et al. (2014) and exploit technical peculiarities at the regional level that determine the roll-out of high-speed internet. In contrast to findings for Norway (Bhuller et al., 2013), this paper documents a substitution effect of internet and child sex abuse and no effect on rape incidences. The effects on murder increase under the instrumental variable approach however remain insignificant. Overall, the estimated net effects might stem from indirect effects related to differences in reporting crime, a matching effect, and a direct effect of higher and more intensive exposure to extreme and violent media consumption. After investigating the potential channel, I do find some evidence in favor of a reporting effect suggesting that the direct consumption effect is even stronger. Further investigation of the development of illegal pornographic material suggests that the direct consumption channel does play a significant role in explaining the substitution effect.

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Nolte, André (2017) The internet effects on sex crime and murder - evidence from the broadband internet expansion in Germany. Open Access ZEW Discussion Papers Mannheim 17-050 [Working paper]
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