Jakob Jonsson

Karolinska Institutet | KI · Centrum för psykiatriforskning

Objective: Previous research suggests that a brief duty-of-care telephone call to high expenditure customers was associated with lower gambling over the subsequent year. The current aim was to assess effects on individual trajectories rather than overall group effects reported previously. The objective was to identify different patterns of individ...

Background Previous research has suggested empirically based gambling loss limits, with the goal of preventing gambling related harm in the population. However, there is a lack of studies relating gambling loss limits to individual factors such as income. The current study examines whether gambling loss limits should be income-specific. Materials...

Background and aims Lower-risk recommendations for avoiding gambling harm have been developed as a primary prevention measure, using self-reported prevalence survey data. The aim of this study was to conduct similar analyses using gambling company player data. Methods The sample ( N = 35,753) were Norsk Tipping website customers. Gambling indicato...

Telephone and letter-based motivational interventions with high expenditure gamblers have significant short and long term positive effects on gambling and use of responsible gambling tools. This report examines how different subtypes of gamblers, based upon patterns of play, are differentially affected. A randomized controlled trial design with thr...

Introduction: The COVID-19 outbreak will likely have a public health impact beyond immediate disease transmission. Little is known about whether social distancing and other societal changes has provoked an increase in gambling, whether decreased betting opportunities due to paused sports events spurred gamblers to transition to online casino gambli...

Background and aims: A previous randomized controlled trial demonstrated that phone and letter-based motivational interventions with high expenditure gamblers had significant short-term positive effects on gambling and use of responsible gambling tools. This post-trial follow-up examined outcomes in gambling expenditure over 12 months. Design: O...

Gambling disorder is a public health issue in many countries, and expectations that the gambling industry protects individuals from harm are increasing. The primary objective of this study was to investigate the effects of providing personalized feedback on gambling intensity among high consumers of venue-based and online gambling in Norway. A rand...

Gambling disorder is a public health issue in many countries, and expectations that the gambling industry protects individuals from harm are increasing. The primary objective of this study was to investigate the effects of providing personalized feedback on gambling intensity among high consumers of venue-based and online gambling in Norway. A rand...

Traditionally, gambling and problem gambling research relies on cross-sectional and retrospective designs. This has compromised identification of temporal relationships and causal inference. To overcome these problems a new questionnaire, the Jonsson-Abbott Scale (JAS), was developed and used in a large, prospective, general population study, The S...

Recent increases in the number of online gambling sites have made gambling more available, which may contribute to an increase in gambling problems. At the same time, online gambling provides opportunities to introduce measures intended to prevent problem gambling. GamTest is an online test of gambling behavior that provides information that can be...

Background: Motives for gambling have been shown to be associated with gambling involvement, and hence important in the understanding of the etiology of problem gambling. The aim of this study was to describe differences in gambling motives in different subgroups of lifetime risk gamblers, categorized by: age, gender, alcohol- and drug habits and t...

Effective therapies for pathological gambling exist, but their use is limited to about 10% of the target population. In an attempt to lower the barriers for help, Internet-based cognitive behavioural therapy (ICBT) has been shown to be effective when delivered to a non-depressed sample with pathological gambling. This study sought to extend this fi...

Pathological gambling is a widespread problem with major implications for society and the individual. There are effective treatments, but little is known about the relative effectiveness of different treatments. The aim of this study was to test the effectiveness of motivational interviewing, cognitive behavioral group therapy, and a no-treatment c...

Estimates of the prevalence of gambling problems among adults by sampling from whole population registries have been made in Finland, Iceland, Norway, and Sweden. The studies in Norway and Sweden are fairly similar, showing a higher prevalence in Sweden according to the South Oaks Gambling Screen Revised (SOGS-R), and similar prevalence according t...

The aim of this study was to assess the relation between the diagnosis of encopresis at 8 and 10 years of age, and mental and somatic health 10 years later. The importance of type of encopresis (primary or secondary) at 8 years was also studied. Subjects were a non-clinical encopretic sample (N=73) and control subjects (N=75) [2]. Seven assessment...