A search of maximum generalized resolution quaternary-code designs via integer linear programming

Quaternary-code (QC) designs, an attractive class of nonregular fractional factorial designs, have received much attention due to their theoretical elegance and practical applicability. Some recent works of QC designs revealed their good properties over their regular counterparts under commonly used criteria. We develop an optimization tool that can maximize the generalized resolution of a QC design of a given size. The problem can be recast as an integer linear programming (ILP) problem through a linear simplification that combines the \(k\)- and \(a\)-equations, even though the generalized resolution does not linearly depend on the aliasing indexes. The ILP surprisingly improves a class of \((1/16)\)th-fraction QC designs with higher generalized resolutions. It also applies to obtain some \((1/64)\)th-fraction QC designs with maximum generalized resolutions, and these QC designs generally have higher generalized resolutions than the regular designs of the same size.     

Risk Factors for Gambling Problems: An Analysis by Gender

Differences in problem gambling rates between males and females suggest that associated risk factors vary by gender. Previous combined analyses of male and female gambling may have obscured these distinctions. This study aimed to develop separate risk factor models for gambling problems for males and for females, and identify gender-based similarities and differences. It analysed data from the largest prevalence study in Victoria Australia (N = 15,000). Analyses determined factors differentiating non-problem from at-risk gamblers separately for women and men, then compared genders using interaction terms. Separate multivariate analyses determined significant results when controlling for all others. Variables included demographics, gambling behaviour, gambling motivations, money management, and mental and physical health. Significant predictors of at-risk status amongst female gamblers included: 18–24 years old, not speaking English at home, living in a group household, unemployed or not in the workforce, gambling on private betting, electronic gaming machines (EGMs), scratch tickets or bingo, and gambling for reasons other than social reasons, to win money or for general entertainment. For males, risk factors included: 18–24 years old, not speaking English at home, low education, living in a group household, unemployed or not in the workforce, gambling on EGMs, table games, races, sports or lotteries, and gambling for reasons other than social reasons, to win money or for general entertainment. High risk groups requiring appropriate interventions comprise young adults, especially males; middle-aged female EGM gamblers; non-English speaking populations; frequent EGM, table games, race and sports gamblers; and gamblers motivated by escape.     

Machine gaming in Sydney clubs: characteristics of the supporting resident populations

This research provided background for surveys and interviews in later stages of a 3 part project. It aimed to identify, from secondary research, sociodemographic characteristics which tend to support registered clubs and their machine gaming activities in the Sydney Statistical Division. Using multiple methods including Pearson's Product Moment correlation, Principal Components factor analysis, and stepwise regression, the study profiled Sydney populations which spend highly on gaming machines. The most important sociodemographic predictors of Sydney statistical local areas where per capita gaming machine expenditure is high are large proportions of the adult resident population who were born in Malta, Greece, Lebanon, China, Italy, Vietnam, Yugoslavia, India or the Philippines; have no vocational or tertiary qualifications; or are unemployed.     

Adolescent exposure to gambling promotions during televised sport: an exploratory study of links with gambling intentions

Young people are exposed to gambling promotions while watching televised sports; however, little research has examined how this influences gambling attitudes and intentions. This paper developed and tested a research model underpinned by the Theory of Reasoned Action and specifically aimed to examine (1) adolescents' exposure and attitudes to, and recall and perceptions of, gambling promotions during televised sport; (2) associations between adolescents' exposure and attitude to these gambling promotions, and their intention to gamble on sports and other gambling activities once of legal gambling age. An online survey was conducted of 131 Australian adolescents. Greater intention to gamble both on sports and non-sports was associated with higher frequency of watching televised sports, and more positive attitudes to gambling operators, to gambling promotions during televised sport and to promotional techniques used. Regression analysis indicated that the strongest predictors of sports betting intention were male gender and a more positive attitude to gambling sponsors and their promotions during televised sport. Strongest predictors of gambling intention were male gender, subjective norms and a more positive attitude to promotion of gambling during televised sport. Findings can inform advertising restrictions for gambling during general television viewing times, and health promotion messages countering promotion of gambling to adolescents.     

A taxonomy of gambling and casino games via social media and online technologies

The increased popularity of casino games on social media platforms has prompted international jurisdictions to consider the extent to which these games may be similar to Internet gambling activities and therefore subject to regulatory action. Gambling themes are popular in video and computer games, and simulated-gambling activities are commonly offered by gambling operators as a way of enticing users to gamble online with money. However, little research has evaluated the impact of the digital convergence of gambling and gaming. The lack of a clear definition of online gambling-themed activities to guide such research undertakings represents a significant hurdle to the fields of gambling and gaming. Based on a review of the extant literature, this article proposes a taxonomy to distinguish between many types of online activities with gambling-themed content. This taxonomy suggests that the principal features that differentiate online gambling games include the requirement for payment, the role of skill, the type of platform and the centrality of the gambling theme. The proposed hierarchical framework aims to promote clear and consistent discussion to guide ongoing investigation of new and emerging Internet gambling and gaming technologies.     

A Case of Mistaken Identity? A Comparison of Professional and Amateur Problem Gamblers

Professional gamblers are more likely than amateur gamblers to meet criteria for problem gambling but minimal research has examined their gambling behavior and its consequences. This study compared gambling behavior, problem gambling symptoms, related harms, recognition, and help-seeking among problem semi/professional gamblers (PPGs/PSPGs) and problem amateur gamblers (PAGs). Surveys completed by 57 self-identified professional gamblers, 311 semi-professional gamblers and 4226 amateur gamblers were analysed. PPGs/PSPGs were significantly more likely than PAGs to be male, younger, never married, speak a language other than English at home, and have higher psychological distress, compared to PAGs. PPGs/PSPGs were more likely to gamble more frequently on many skills-based forms, but most also participated in several chance-based forms. PPGs’/PSPGs’ most common problematic gambling form was electronic gaming machines and they were more likely to have problems with sports betting than PAGs. Most PPGs/PSPGs reported coming out behind on all gambling forms over the previous year. PPGs/PSPGs were more likely than PAGs to report chasing losses and numerous detrimental financial gambling consequences. This group’s self-identification as PPGs/PSPGs is clearly inaccurate and perhaps a means to avoid stigma, elevate status and support problem denial. PPGs/PSPGs may represent an extreme example of gamblers with erroneous cognitions and beliefs who lack the required discipline and skill to be successful professional gamblers. The findings identify a group of problem gamblers who may benefit from interventions to dispel their mistaken self-identity, and emphasize the need for more rigorous confirmation of professional gambler status in future research.     

The Development of a Multi-dimensional Gambling Accessibility Scale

The aim of the current study was to develop a scale of gambling accessibility that would have theoretical significance to exposure theory and also serve to highlight the accessibility risk factors for problem gambling. Scale items were generated from the Productivity Commission’s (Australia’s Gambling Industries: Report No. 10. AusInfo, Canberra, 1999) recommendations and tested on a group with high exposure to the gambling environment. In total, 533 gaming venue employees (aged 18–70 years; 67% women) completed a questionnaire that included six 13-item scales measuring accessibility across a range of gambling forms (gaming machines, keno, casino table games, lotteries, horse and dog racing, sports betting). Also included in the questionnaire was the Problem Gambling Severity Index (PGSI) along with measures of gambling frequency and expenditure. Principal components analysis indicated that a common three factor structure existed across all forms of gambling and these were labelled social accessibility, physical accessibility and cognitive accessibility. However, convergent validity was not demonstrated with inconsistent correlations between each subscale and measures of gambling behaviour. These results are discussed in light of exposure theory and the further development of a multi-dimensional measure of gambling accessibility.     

Risk Factors for Problem Gambling Among Indigenous Australians: An Empirical Study

Despite a long history of gambling amongst many Indigenous peoples, knowledge about contemporary Indigenous gambling is sparse. In Australia, previous studies of Indigenous gambling have been severely limited in number, scope and rigour. The research reported in this paper is based on the first Indigenous-specific quantitative gambling research undertaken in Australia since 1996 and draws on the largest sample to date. This study examined numerous aspects of gambling among Indigenous Australians. After appropriate consultations and permission, the study collected surveys from 1,259 self-selected Indigenous adults in 2011 at three Indigenous festivals, online and in several Indigenous communities. This paper draws on these data to identify problem gambling risk factors by comparing selected socio-demographic characteristics, early exposure to gambling, gambling motivations, gambling behaviour, gambling cognitions, and substance use while gambling, amongst non-problem, low risk, moderate risk and problem gamblers. A logistic regression investigated the difference between problem gamblers and all other PGSI groups. Risk factors associated with being a problem gambler were: being older, commencing gambling when under 10 years old, always being exposed to adults gambling as a child, using alcohol and/or drugs while gambling, having family and friends who gamble, having an addiction to gambling and not gambling to socialise, having a high expenditure on commercial gambling, and living in a state or territory other than NSW or QLD. Public health measures to address these risk factors are identified.     

Professional Help-Seeking for Gambling Problems: Awareness,Barriers and Motivators for Treatment

Despite the negative consequences associated with gambling, few problem gamblers seek professional help. This study aimed to examine awareness of professional sources of help and help-seeking behaviour amongst regular and problem gamblers. Australian gamblers (N = 730) were recruited from the general population, multicultural gambling venues, and gambling helplines and treatment services. Surveys measured awareness of professional help services, help-seeking behaviour and motivators and barriers to seeking help. Gamblers demonstrated low awareness of professional help services. Problem gamblers born in Australia or who were divorced were more likely to seek help. Problem gamblers who were reluctant to seek help due to a desire solve the problem on their own and feeling ashamed for themselves or their family pride were more likely to have overcome these barriers to seek help. However, significant barriers related to denial of problem severity and concerns about the ability to access low cost services that cater for multicultural populations predicted a lower likelihood of having sought help. Public education should aim to de-mystify the treatment process and educate gamblers about symptoms of problem gambling to reduce shame, stigma, and denial and encourage help-seeking. Ongoing education and promotion of help services is required to increase awareness of the resources available, including targeted promotions to increase awareness of relevant services among specific populations.