Limit-setting strategies have been discussed as potential tools to minimize problem gambling. But, previous reviews have suggested that asking players to voluntarily set either a time or money limit may not be effective. This article provides an updated review of the efficacy of limit-setting tools. The results of previous studies suggested that only 1 to 3% of people set voluntary limits, although one study reported a rate of 26%. After 6 to 12 months, voluntary limit-setting drops to almost zero. Only a few studies in Norway had tested mandatory limit-setting. These studies all involved customers of Norsk Tipping. The results of these studies provide preliminary support that requiring players to set limits can help to reduce spending on gambling. Overall, this review is in line with previous studies that suggest voluntary limit-setting may not be effective. But, mandatory limit-setting may have potential benefits in reducing harm from gambling.
