“It’s illegal to buy drugs from street dealers”: A Video-Based Pre-Post Study of a Behavioral Intervention to Displace Dealers from an Amsterdam Open-Air Drug Market
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“It’s illegal to buy drugs from street dealers” : A Video-Based Pre-Post Study of a Behavioral Intervention to Displace Dealers from an Amsterdam Open-Air Drug Market. / Ejbye-Ernst, Peter; Moeller, Kim; Liebst, Lasse Suonperä; Thomas, Jo; Sexton, Melissa; Lindegaard, Marie Rosenkrantz.
In: Journal of Experimental Criminology, 22.12.2023.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - “It’s illegal to buy drugs from street dealers”
T2 - A Video-Based Pre-Post Study of a Behavioral Intervention to Displace Dealers from an Amsterdam Open-Air Drug Market
AU - Ejbye-Ernst, Peter
AU - Moeller, Kim
AU - Liebst, Lasse Suonperä
AU - Thomas, Jo
AU - Sexton, Melissa
AU - Lindegaard, Marie Rosenkrantz
PY - 2023/12/22
Y1 - 2023/12/22
N2 - Objectives A high number of street dealers operate in the Red Light District inAmsterdam, The Netherlands. To displace the dealers, the Municipality of Amsterdam installed text-based light projections in a street attracting a high number of dealers.Methods To evaluate the intervention, we did a pre-post analysis of video footage from two CCTV cameras located in the street. In total, we analyzed 765 one-minute segments of footage from before and after the implementation.Results The implementation was followed by a four percentage point reduction in street dealers. However, the estimated efect shows fragileness with wide confdence intervals and a p-value just below 0.05, and a Bayesian robustness analysis suggests that the intervention was not associated with the outcome.Conclusions Analyzing CCTV-footage ofers a unique avenue for evaluating smallscale interventions in open-air drug markets. While we observed a decrease in the presence of dealers, the intervention still needs further validation.
AB - Objectives A high number of street dealers operate in the Red Light District inAmsterdam, The Netherlands. To displace the dealers, the Municipality of Amsterdam installed text-based light projections in a street attracting a high number of dealers.Methods To evaluate the intervention, we did a pre-post analysis of video footage from two CCTV cameras located in the street. In total, we analyzed 765 one-minute segments of footage from before and after the implementation.Results The implementation was followed by a four percentage point reduction in street dealers. However, the estimated efect shows fragileness with wide confdence intervals and a p-value just below 0.05, and a Bayesian robustness analysis suggests that the intervention was not associated with the outcome.Conclusions Analyzing CCTV-footage ofers a unique avenue for evaluating smallscale interventions in open-air drug markets. While we observed a decrease in the presence of dealers, the intervention still needs further validation.
U2 - 10.1007/s11292-023-09602-9
DO - 10.1007/s11292-023-09602-9
M3 - Journal article
JO - Journal of Experimental Criminology
JF - Journal of Experimental Criminology
SN - 1573-3750
ER -
ID: 377057434