The impact of supply reductionon the prevalence of gamblingparticipation and disordered gambling behavior: A systematic review

Abstract

Abstract. Background: Current gaming arcade laws in Germany are intended to reduce significantly the number of gambling locations. Aim: The purpose of this paper is to provide a systematic summary and evaluation of the state of research internationally regarding the effects of a reduction in the supply of games of chance on the prevalence of gambling involvement and disordered gambling behavior in the population. Method: A systematic search was made of the databases PsycINFO, Psyindex, Cinahl, Web of Science and Medline using relevant search terms. Results: In total, eight studies were identified that met the criteria for inclusion. The few findings that exist, which are to some extent inconsistent, show that in the period following reduction in supply, there is a decline in participation, in the number of frequent gamblers, in demand for therapy and in the number of problem gamblers. In parallel to this, a few individual studies showed an increase in frequency of participation in other forms of gambling. Conclusions: Possible reasons for the incomplete and inconsistent pattern of findings are discussed and attention is drawn to the limitations of the review. Ultimately, effective prevention should encompass coordinated, broadly based and sustained efforts that cover aspects of both behavioral and situational prevention.