Policing Australia’s ‘heroin drought’: using an agent-based model to simulate alternative outcomes

Our paper examines how street-level drug markets adapt to a macro-level disruption to the supply of heroin, under three experimental conditions of street-level drug law enforcement: random patrol, hot-spot policing and problem-orientated policing. We utilize an agent-based model to explore the relative impact of abstractions of these three law enforcement strategies after simulating an ‘external shock’ to the supply of heroin to the street-level drug market. We use 3 years of data, which include the period of the ‘heroin drought’ in Melbourne (Australia) that commenced in late 2000 and early 2001, to measure changes in a selected range of crime and harm indicators under the three policing conditions. Our results show that macro-level disruptions to drug supply have a limited impact on street-level market dynamics when there is a ready replacement drug. By contrast, street-level police interventions are shown to vary in their capacity to alter drug market dynamics. Importantly, our laboratory abstraction of problem-orientated policing is shown to be the optimal strategy to disrupt street-level injecting-drug markets, reduce crimes and minimize harm, regardless of the type of drug being supplied to the market.

Introduction: The (Ab)use of Language in Legal Discourse

International Journal for the Semiotics of Law - Revue internationale de Sémiotique juridique -     

Culture and Negotiation Strategy

In this article the authors investigate the relationship between culture and joint gains by examining the role of information sharing and power strategies in intracultural negotiations. Previously, the authors found that the relationship between cultural values or norms and joint gains was uncertain in six cultures: France, Russia, Japan, Hong Kong, Brazil, and the United States. Of the five values and norms measured, only norms for information sharing in negotiation were directly related to joint gains. This article explores and extends prior findings by investigating the strategies used by negotiators in the same six cultures. Cultures that maximized joint gains used direct information-sharing strategies or a combination of indirect and direct strategies. Power strategies may help or hurt joint gains, depending on a culture's values and norms for power and whether or not power-based influence is used in conjunction with sufficient information exchange. The findings suggest that understanding the other party's cultural characteristics and strategies can help negotiators plan how to focus on information exchange and deal with unusual power strategies that they may encounter.