Strategies to customize responsible gambling messages: a review and focus group study

Evaluating the Effectiveness of Responsible Gambling Messages: A Rapid Evidence Assessment

To minimize the harms associated with gambling, an array of responsible gambling (RG) messages has been developed to raise awareness of the risks of problem gambling and encourage safer gambling behaviors. However, evidence is limited as to the utility of RG messages to promote positive gambling-related beliefs and behaviors. In the current paper, we report the results of a Rapid Evidence Assessment (REA) of empirical research on RG messages. We identified 3200 unique articles published between 1890 and September 2024 using search terms related to RG messaging. Eighteen articles (containing 20 unique studies) met our inclusion criteria. Two general themes emerged: 1) RG message preferences among players and 2) RG message effectiveness. Specifically, players prefer self-appraisal messages, which were more effective in promoting RG behaviors compared to informative messages. Messages content also needs to be segmented (i.e., low-risk players prefer different types of messages than high risk players, such as highlighting player quizzes for low-risk players and helplines for high-risk players). Lastly, RG messages should be presented dynamically (e.g., pop-ups on an Electronic Gaming Machine: EGM). Results suggest a need for the gambling industry to adopt targeted, evidence-based RG messaging, as well as a need to engage in integrated knowledge mobilization, to more effectively promote RG. These findings underscore the importance of tailoring RG messages to player risk levels and preferences while leveraging dynamic delivery methods to maximize their effectiveness in promoting safer gambling behaviors and reducing harm.

The Relevance of Marketing in Sports Betting Perceptions and Behaviors Across Different age Groups

Sports betting and its associated problems are increasing rapidly. Moreover, it has been widely advertised and marketed, successfully reaching young adult males. This work aims to review recent publications regarding the relationship between marketing and sports betting perceptions and behaviors across different ages. For this purpose, a search in the PubMed database was set for 5 years (November 2014 - November 2019). The search terms included: "Sports betting AND children", "Sports betting AND young adult", "Sports betting AND adult". The search generated 131 articles, including some duplications. Once duplicates were eliminated, the titles and abstract analysis led to 21 references. To this, four more recent references were added to complement the introduction and discussion sections. The total number of references is 25. The inclusion criteria were as follows: (a) human study, (b) quantitative, experimental, clinical study, or review, (c) emphasis on the relationship between marketing and sports betting perceptions and behaviors, (d) specified number of subjects, (e) male or female gender, and (f) written in English (title and abstract). The findings indicated that: (1) marketing plays a significant role in normalizing gambling in sports, (2) policymakers should consider comprehensive approaches to reduce the exposure of sports betting advertising to young individuals, and (3) future studies should explore potential differences in results based on gender and developmental stage. For instance, sports betting is more prevalent among males than females, and younger children tend to be more impulsive than older children.

What is known about population level programs designed to address gambling-related harm: rapid review of the evidence

BACKGROUND

Gambling and gambling-related harm attract significant researcher and policy attention. The liberalisation of gambling in most western countries is strongly associated with a marked rise in gambling activity and increases in gambling-related harm experienced at the population level. Programs to address gambling-related harm have traditionally focused on individuals who demonstrate problematic gambling behaviour, despite clear evidence of the effectiveness of a public health approach to high-risk activities like gambling. Little is known about the availability or efficacy of programs to address gambling-related harm at a population level.

METHODS

The Victorian Responsible Gambling Foundation commissioned a rapid evidence review of the available evidence on programs designed to reduce gambling-related harm at a population level. The review was conducted using a public health and harm reduction lens. MEDLINE, ProQuest Central and PsychInfo databases were searched systematically. Included studies were published in English between 2017 - 2023 from all countries with gambling policy contexts and public health systems comparable to Australia's; included primary data; and focused on primary and/or secondary prevention of gambling-related harm or problems.

RESULTS

One hundred and sixty-seven articles were eligible for inclusion. Themes identified in the literature included: risk and protective factors; primary prevention; secondary prevention; tertiary prevention; target population group; and public health approach. The evidence review revealed a gap in empirical evidence around effective interventions to reduce gambling-related harm at the population level, particularly from a public health perspective.

CONCLUSIONS

Addressing gambling-related harm requires a nuanced, multi-layered approach that acknowledges the complex social, environmental, and commercial nature of gambling and associated harms. Moreover, evidence demonstrates community programs to reduce gambling-related harm are more successful in reducing harm when based on sound theory of co-design and address the social aspects that contribute to harm.

Associations of self-regulation strategy use with in-play betting intensity and associated harms: An ecological momentary assessment study

Self-regulation strategies, such as limit setting, can be effective in reducing harms associated with gambling. However, limited research has examined their applicability to in-play sports betting. The current study therefore examined the utility of self-regulation strategies in reducing in-play betting intensity and associated harms. Adults engaging in-play betting (N = 77; Mage = 41.23 years, 71.43 % men) completed 14 days of ecological momentary assessment surveys in which they reported their in-play betting behaviours (number of bets placed, money spent), use of self-regulation strategies for in-play betting (setting monetary limits, setting time limits, stopping betting when no longer fun, taking frequent breaks), and in-play-betting-related harms. Multilevel models revealed that participants with a greater propensity to set monetary limits were overall less likely to experience financial, interpersonal, and health harms. In addition, participants were less likely to experience emotional/psychological harms following in-play betting occasions during which they set monetary limits (versus when they did not). In contrast, participants with a greater propensity to set time limits tended to spend more money on in-play bets, experienced more harms on average, and were overall more likely to experience financial and work/study harms. Results provide preliminary support for the utility of monetary limit setting, but not time limit setting, in reducing in-play-betting-related harms. Findings support the applicability of select self-regulation strategies originally proposed for more traditional forms of gambling to in-play sports betting, and highlight a need for further research investigating whether other responsible gambling strategies may be effective in reducing in-play-betting-related harms.

Pictograms to aid laypeople in identifying the addictiveness of gambling products (PictoGRRed study)

The structural addictive characteristics of gambling products are important targets for prevention, but can be unintuitive to laypeople. In the PictoGRRed (Pictograms for Gambling Risk Reduction) study, we aimed to develop pictograms that illustrate the main addictive characteristics of gambling products and to assess their impact on identifying the addictiveness of gambling products by laypeople. We conducted a three-step study: (1) use of a Delphi consensus method among 56 experts from 13 countries to reach a consensus on the 10 structural addictive characteristics of gambling products to be illustrated by pictograms and their associated definitions, (2) development of 10 pictograms and their definitions, and (3) study in the general population to assess the impact of exposure to the pictograms and their definitions (n = 900). French-speaking experts from the panel assessed the addictiveness of gambling products (n = 25), in which the mean of expert's ratings was considered as the true value. Participants were randomly provided with the pictograms and their definitions, or with a standard slogan, or with neither (control group). We considered the control group as representing the baseline ability of laypeople to assess the addictiveness of gambling products. Each group and the French-speaking experts rated the addictiveness of 14 gambling products. The judgment criterion was the intraclass coefficients (ICCs) between the mean ratings of each group and the experts, reflecting the level of agreement between each group and the experts. Exposure to the pictograms and their definition doubled the ability of laypeople to assess the addictiveness of gambling products compared with that of the group that read a slogan or the control group (ICC = 0.28 vs. 0.14 (Slogan) and 0.14 (Control)). Laypeople have limited awareness of the addictive characteristics of gambling products. The pictograms developed herein represent an innovative tool for universally empowering prevention and for selective prevention.

Preventive Interventions and Harm Reduction in Online and Electronic Gambling: A Systematic Review

Gambling possess both entertaining and potentially harmful aspects. It remains a challenge for public health authorities and gambling operators to recommend and implement effective evidence-based interventions to reduce gambling-related harm and prevent problematic gambling behavior. This systematic review examined studies on randomized controlled trials in this field, aiming to describe and evaluate the effect of preventive and harm-reducing interventions for online gambling and electronic gaming machines. A systematic literature search was performed in PsycINFO, PubMed, Embase, and SCOPUS. Study selection, risk of bias assessment, and data extraction were conducted by two reviewers independently, and a synthesis was performed. A total of 18 studies were included, of which the majority were limited by quality issues. The applied interventions focused on restraining gambling, providing feedback, delivering therapeutic and informative content, and priming analytical thinking. The studies varied greatly in terms of specific intervention content, study setting, participants, and outcome measures, and no consistent patterns could be detected between study characteristics and related effects. Although research in the field is growing, there is still a need for further methodologically rigorous investigation and consensus on outcome measures sensitive to effects of preventive and harm-reducing interventions.

Gamblers' Perception of the Playscan Risk Assessment: A Mixed-Methods Study

Responsible gambling (RG) tools are globally widespread; they aim to prevent or decrease the harm caused by gambling. However, existing research suggests that several included features do not decrease gambling or significantly reduce the subsequent harm. Most of the previous studies have used gambling data to understand the changes in gambling behavior. However, the literature lacks research regarding gamblers' experience and perception of RG tools, which may provide insight into increasing the usage and effectiveness of RG tools. This mixed-methods study aimed to explore gamblers' perception of their risk assessment in the RG tool Playscan regarding developing harmful gambling problems. Overall, 757 participants rated the perceived accuracy of their risk assessment and their perception of the overall RG tool that conducted the assessment. Participants were also allowed to leave a comment providing feedback, which was analyzed using thematic analysis. Quantitative data was analyzed using logistic regression and structural equation modeling. Qualitative analyses revealed that most of the participants were pleased with the risk assessment and found it helpful. Moderated mediation analysis showed that participants' assessment agreement partially mediated the association between expressing a negative view and their general view of Playscan. These results highlight the need to decrease the level of disagreement for promoting a better general view of RG tools to potentially increase their usage and effectiveness.

Encouraging and evaluating limit-setting among on-line gamblers: a naturalistic randomized controlled trial

AIMS

We tested the effectiveness of three different messages designed to increase limit-setting on gambling sites and sent these via e-mail or in-account notification to compare delivery modes. As a secondary aim, we examined the effects of limit-setting on gambling behaviour.

DESIGN

A pre-registered, naturalistic randomized control trial using a 3 × 2 plus control design.

SETTING

Four on-line Australian sports and racing wagering websites.

PARTICIPANTS

A total of 31 989 wagering customers (reduced to 26,560 after eligibility screening) who had placed bets on at least 5 days in the past 30 [mean age = 41.4, standard deviation (SD) = 14.3; 79% male].

INTERVENTIONS AND COMPARATORS

Messages were sent via e-mail or in-account notification by on-line gambling operators and were designed to either: (1) be informative, describing the availability and purpose of the tool (informative messages), (2) highlight the benefits other people receive from using the tool (social messages) or (3) promote the benefit individuals could receive from using the tool (personal messages). A control group who did not receive messages was monitored for comparison.

MEASUREMENTS

Our primary outcome was the number of customers who set a deposit limit within 5 days of receiving messages and secondary outcomes included pre- and post-message betting behaviour (e.g. average daily wager).

FINDINGS

One hundred and sixty-one (0.71%) customers sent messages set limits compared to three (0.08%) controls [adjusted odds ratio (aOR) = 8.17, 95% confidence interval (CI) = 2.99, 33.76)]. Social and personal messages were no more effective than informative messages (aOR = 0.98, 95% CI = 0.65, 1.48; aOR = 0.93, 95% CI = 0.60, 1.44) and in-account messages were no more effective than e-mails (aOR = 1.02, 95% CI = 0.71, 1.49). Customers who set limits significantly decreased their average daily wager, the SD of daily wager, net loss and betting intensity compared with non-limit-setters.

CONCLUSIONS

Messages to on-line gambling website customers are inexpensive, and may lead to small but impactful increases in setting deposit limits. Limit-setting may be an effective strategy for reducing gambling expenditure and intensity.

A Comparison of Two GameSense Implementation Approaches: How Program Awareness and Engagement Relate to Gambling Beliefs and Behaviors

Despite the size and scope of responsible gambling (RG) programs in the U.S., relatively few studies have evaluated these programs. Using survey data from 4795 subscribers to a casino loyalty program, we examined respondents' awareness of and engagement with the GameSense RG program, and gambling beliefs and behaviors. We compared how differences in the implementation structure and visibility of the GameSense program (i.e., state-regulated with a standalone, branded GameSense center vs. corporate-integrated as part of loyalty program desks) was associated with GameSense awareness and engagement, perceptions of gambling operator RG practices, three Positive Play subscales (i.e., behavior, personal responsibility, and gambling literacy), understanding of gambling concepts, and use of RG strategies. More respondents who had visited the property with a state-regulated, branded center were aware of GameSense (36.5%), compared to respondents who visited other properties (7.4%). Perceptions of the operator's RG practices were generally high for all respondents. Multivariate analyses revealed no relationship between GameSense awareness and gambling belief or behavior outcomes, yet showed that respondents who picked up a GameSense brochure used slightly more RG strategies. Our findings suggest that the visibility of an RG program might influence program awareness and engagement but not certain RG-related behavioral outcomes.

Gambling Self-Control Strategies: A Qualitative Analysis

There is limited research exploring the perceptions of people who gamble on the self-control strategies used to limit their gambling. This qualitative study examines self-control strategies used to limit money spent gambling, frequency of gambling, and time spent gambling. A total of 56 people who gamble (27 males and 29 females) participated in nine focus groups and five individual interviews in Montreal, Calgary, and Toronto (Canada). Self-control strategies used to limit their gambling expenditure were more common than frequency or time limiting strategies. Strategies to limit expenditure included: restricting access to money; keeping track of money allocated to gambling activities; and avoiding certain types of gambling activities. Various contextual factors were identified to influence those strategies, including social influences; winning or losing; using substances. Findings from this study emphasize the importance of communicating clear gambling limits to people who gamble, as well as the value of developing individual self-control strategies to limit frequency, time and money spent gambling.

Gambling Marketing Strategies and the Internet: What Do We Know? A Systematic Review

Background: The gambling industry has developed many types of gambling on Internet in recent years. Gambling is a social activity for a majority of the world population, but problem gambling (PG) can emerge. The trajectories of gamblers from initiation to PG development are influenced by many variables, including individual and environmental variables and also variables linked to the gambling characteristics. Marketing has been reported to influence gamblers' perceptions and behaviors, but this is not as clear for digital marketing. Digital gambling marketing is broad, ranging from the marketing of gambling websites to communication and advertising on the social media and networks. The objective of this article was to fill this gap by conducting a systematic literature review in order to answer the following questions: (1) What are the strategies of digital gambling marketing? (2) What is the effect of this exposure on gambling representations, intentions and practices? Method: A systematic review was conducted following the PRISMA guidelines on Pubmed database (Medline) from February 2020 to March 2020 and Scopus. Existing papers published between January 2000 and February 2020 were identified by searching with this algorithm: ((("internet"[MeSH Major Topic] OR (communications[All Fields] AND media[All Fields])) OR ("social media"[MeSH Terms] OR ("social"[All Fields] AND "media"[All Fields]) OR "social media"[All Fields])) AND "gambling"[MeSH Major Topic]) AND ("marketing"[MeSH Terms] OR "marketing"[All Fields]), in title, keywords or abstract. Results: Ninety-one candidate studies were selected, 21 studies were selected for the systematic review. Sport appeared as a specific target of online gambling marketing. A growing range of platforms for online sport betting and the development of strategies on the social media were identified. Regarding content, a systematic association between sport and gambling was highlighted. Vulnerable populations, such as young people, appeared to be at high risk of exposure to gambling marketing. Conclusion: Little data is available on the strategies of digital gambling marketing or on exposure to it. Sport could be the first target for future research to understand how the industry is targeting specific populations, and what influence these strategies could have on PG development.

Perspective of Internet Poker Players on Harm-Reduction Strategies: A Cross-Sectional Study

Background: Internet gambling may increase rates of gambling harm. This current study aimed to assess Internet poker players’ views on various harm-reduction (HR) strategies. It also examined differences in these views according to the games played (poker only vs. poker plus other gambling activities), indebtedness, and problem gambling severity. Methods: Internet poker players (n = 311; 94.2% Male) recruited online between 2012 and 2014 were included in the analyses and completed a survey on indebtedness, problem gambling severity index, and ten statements regarding HR features. Results: Among the whole sample, the most frequently endorsed HR strategy was setting money limits, specialized online help, and peer support forums. People who play poker only (70%) are less prone to endorse the utility of information on excessive gambling and specialized healthcare centers. No differences were found between those people with debt versus those without regarding HR assessment. Participants with severe problem gambling were more skeptical about HR strategies based on information on specialized healthcare centers. Conclusion: Setting money limits, online help, and peer support forums are the most commonly endorsed strategies. Future research is needed to evaluate the effectiveness of online harm reduction strategies.

Use of Consumer Protection Tools on Internet Gambling Sites: Customer Perceptions, Motivators, and Barriers to Use

Internet gambling has been widely legalised in recognition of its capacity to, and the importance of, providing consumer protection tools to prevent and minimise gambling-related harms. Most licensed Internet gambling sites are required to provide consumer protection tools, including activity statements, deposit limits, and time-outs (temporary self-exclusion). However, few Internet gambling customers engage with the tools. An online survey of 564 customers of Australian Internet gambling sites aimed to understand the extent to which consumer protection tools are used, characteristics of those using these tools, and the perceptions and attitudes towards tool use, including barriers to use. Most participants were aware of the tools and had accessed activity statements; few had used deposit limits (24.5%) or time-outs (8.1%) but use of these restrictive tools was higher among those at-risk of gambling problems. Satisfaction with tools was generally high among users and tools were mostly used as intended; however, only moderate changes in behaviour were reported. Participants predominately did not use the restrictive tools as they did not see these as relevant for them, and they were perceived to be intended for people with gambling problems. The findings are important to drive necessary improvements to consumer protection efforts including efforts to encourage perception that tools are relevant for all customers. Changes to current practice, including terminology and promotion of tools, are needed by Internet gambling operators and policy makers to improve the utilisation and effectiveness of consumer protection tools to enable sustainable gambling among the broader cohort of Internet gamblers.

Gambling Industry Employees' Experiences with an Onsite Responsible Gambling Program

We examined gambling venue employees' experiences with GameSense, an onsite responsible gambling information center designed to be a resource for casino employees as well as patrons. Participants included 492 employees who reported on their engagement with, and opinions and knowledge of, the GameSense information center and its staff (i.e., GameSense Advisors), as well as their own employment department and gambling involvement. A minority of participants (33.5%) reported having spoken with a GameSense Advisor about responsible gambling or problem gambling; the remaining 66.5% either did not ever speak to a GameSense Advisor or only had a casual conversation with one. Most participants (88.9%) indicated that casino patrons could use the GameSense program, but less than half (37.9%) believed that casino staff/employees could do the same. Participants generally had positive opinions about the program, endorsing positive potential impacts (e.g., "It helps people avoid gambling beyond their limits") more often than negative potential impacts (e.g., "It encourages people to gamble beyond their limits"). However, gambling venue employees with more extensive gambling histories were less likely to endorse positive potential impacts. Participants' department also was associated with GameSense experiences: those in security/surveillance were the most likely to report having interacted with GameSense Advisors (83.3%) and those in food/beverage/retail were least likely to have done so (28.6%). Some of these findings have implications for improving casino employees' experiences with the GameSense program.

Visibility of age restriction warnings, harm reduction messages and terms and conditions: a content analysis of paid-for gambling advertising in the United Kingdom

OBJECTIVE

The inclusion and design of age restriction warnings, harm reduction messages and terms and conditions (T&Cs) in gambling advertising is self-regulated in the United Kingdom. Our study examines the visibility and nature of this information in a sample of paid-for gambling adverts.

STUDY DESIGN

A content analysis of a stratified random sample of gambling adverts (n = 300) in the United Kingdom from eight paid-for advertising channels (March 2018).

METHODS

For each advert, we assessed whether any age restriction warnings, harm reduction messages and T&Cs were present. If so, visibility was scored on a five-point scale ranging from very poor (≤10% of advert space) to very good (≥26% of advert), which had high inter-rater reliability. Descriptive information on position, design and tone of language was recorded.

RESULTS

One in seven adverts (14%) did not feature an age restriction warning or harm reduction message. In adverts that did, 84% of age restriction warnings and 54% of harm reduction messages had very poor visibility. At least one in ten adverts did not contain T&Cs. In adverts that did, 73% had very poor visibility. For age restriction warnings, harm reduction messages and T&Cs, most appeared in small fonts and outside the main advert frame. Most harm reduction messages did not actually reference gambling-related harms.

CONCLUSION

Age restriction warnings, harm reduction messages and T&Cs do not always appear in paid-for gambling advertising. When they do, visibility is often very poor and the messaging not clear. The findings do not support a self-regulatory approach to managing this information in gambling adverts.

"It did not apply to me": poker players' perspectives of prevention messages

OBJECTIVE

Despite the risks associated with poker and its unique characteristics when compared with other forms of gambling, little knowledge exists of poker players' perceptions of prevention strategies. The aim of this study was to explore poker players' perceptions and understandings of existing problem gambling prevention strategies.

METHODS

This exploratory qualitative study is a secondary data analysis of interviews conducted as a part of a sequential mixed-methods research project, with 12 poker players.

RESULTS

Two main themes emerged from the thematic analysis highlighting a distinction between institutional and personal prevention strategies. When speaking about institutional prevention efforts, players were critical of existing formats, messages, and who these messages were being developed and disseminated by and for. Players believed existing messaging strategies demonstrate an overall lack of awareness concerning the reality of poker. Personal preventive strategies that players themselves put in place to reduce risks included money management, playing for free, maintaining a healthy play-life balance, and managing emotions, to be aware of their relationship with poker, as well as spotting paying opportunities.

CONCLUSIONS

Given poker players' lack of receptivity to existing prevention messaging, it is essential to consider the unique nature of poker and its players. It is also imperative to explore the potential benefits of collaborating with players when it comes to targeted prevention strategies.

A Perspective on Age Restrictions and Other Harm Reduction Approaches Targeting Youth Online Gambling, Considering Convergences of Gambling and Videogaming

Internet gambling has become a popular activity among some youth. Vulnerable youth may be particularly at risk due to limited harm reduction and enforcement measures. This article explores age restrictions and other harm reduction measures relating to youth and young adult online gambling. A systematic rapid review was conducted by searching eight databases. Additional articles on online gambling (e.g., from references) were later included. To place this perspective into context, articles on adult gambling, land-based gambling, and substance use and other problematic behaviors were also considered. Several studies show promising findings for legally restricting youth from gambling in that such restrictions may reduce the amount of youth gambling and gambling-related harms. However, simply labeling an activity as "age-restricted" may not deter youth from gambling; in some instances, it may generate increased appeal for gambling. Therefore, advertising and warning labels should be examined in conjunction with age restrictions. Recommendations for age enforcement strategies, advertising, education, and warning labels are made to help multiple stakeholders including policymakers and public health officials internationally. Age restrictions in online gambling should consider multiple populations including youth and young adults. Prevention and harm reduction in gambling should examine how age-restriction strategies may affect problem gambling and how they may be best enforced across gambling platforms. More research is needed to protect youth with respect to online gambling.

Reducing Internet Gambling Harms Using Behavioral Science: A Stakeholder Framework

Internet gambling provides a unique environment with design mechanics and data-driven opportunities that can impact gambling-related harms. Some elements of Internet gambling including isolation, lack of interruption, and constant, easy access have been argued to pose specific risks. However, identifiable player accounts enable identification of behavioral risk markers and personalized private interfaces to push customized messages and interventions. The structural design of the Internet gambling environment (website or app) can have a strong influence on individual behavior. However, unlike land-based venues, Internet gambling has few specific policies outlining acceptable and unacceptable design practices. Harm minimization including responsible gambling frameworks typically include roles and responsibilities for multiple stakeholders including individual users, industry operators, government regulators, and community organizations. This paper presents a framework for how behavioral science principles can inform appropriate stakeholder actions to minimize Internet gambling-related harms. A customer journey through internet gambling demonstrates how a multidisciplinary nexus of collaborative effort may facilitate a reduction in harms associated with Internet gambling for consumers at all stages of risk. Collaborative efforts between stakeholders could result in the implementation of appropriate design strategies to assist individuals to make decisions and engage in healthy, sustainable behaviors.

Self-Exclusion among Online Poker Gamblers: Effects on Expenditure in Time and Money as Compared to Matched Controls

Background: No comparative data is available to report on the effect of online self-exclusion. The aim of this study was to assess the effect of self-exclusion in online poker gambling as compared to matched controls, after the end of the self-exclusion period. Methods: We included all gamblers who were first-time self-excluders over a 7-year period (n = 4887) on a poker website, and gamblers matched for gender, age and account duration (n = 4451). We report the effects over time of self-exclusion after it ended, on money (net losses) and time spent (session duration) using an analysis of variance procedure between mixed models with and without the interaction of time and self-exclusion. Analyzes were performed on the whole sample, on the sub-groups that were the most heavily involved in terms of time or money (higher quartiles) and among short-duration self-excluders (<3 months). Results: Significant effects of self-exclusion and short-duration self-exclusion were found for money and time spent over 12 months. Among the gamblers that were the most heavily involved financially, no significant effect on the amount spent was found. Among the gamblers who were the most heavily involved in terms of time, a significant effect was found on time spent. Short-duration self-exclusions showed no significant effect on the most heavily involved gamblers. Conclusions: Self-exclusion seems efficient in the long term. However, the effect on money spent of self-exclusions and of short-duration self-exclusions should be further explored among the most heavily involved gamblers.