Relationships between online gambling, mental health and substance use: A review

This review deals with the published literature to date while examining the relationship between online gambling, mental health problems, and substance use. Online gambling, particularly problematic gambling online, was found to be associated with poor mental health and use of various substances. Recent preliminary evidence also suggests that online gamblers may be at a greater risk of some substance use and mental health problems, relative to nononline gamblers. However, many of the reviewed studies were limited by investigation of online gambling behaviors only; these samples may have inadvertently comprised individuals who engage in both online and nononline gambling. Future research is required to address these limitations

Social norms in the development of adolescent substance use: a longitudinal analysis of the International Youth Development Study.

Identifying specific aspects of peer social norms that influence adolescent substance use may assist international prevention efforts. This study examines two aggregated measures of social norms in the school setting and their predictive association with substance (alcohol, tobacco and marijuana) use 2 years later in a large cross-national population-based cohort of adolescents. The primary hypothesis is that in Grade 7 both "injunctive" school norms (where students associate substance use with "coolness") and "descriptive" norms (where student substance use is common) will predict Grade 9 substance use. Data come from the International Youth Development Study, including 2,248 students (51.2% female) in the US and Australia attending 121 schools in Grade 7. Independent variables included injunctive norms (aggregating measures of school-wide coolness ratings of each substance use) and descriptive norms (aggregating the prevalence of school substance use) in Grade 7. Dependent variables included binge drinking and current use of alcohol, tobacco and marijuana in Grade 9. Associations between each type of school-wide social norm and substance use behaviors in Grade 9 were tested using multilevel logistic regression, adjusting for covariates. In unadjusted models, both injunctive and descriptive norms each significantly predicted subsequent substance use. In fully adjusted models, injunctive norms were no longer significantly associated with Grade 9 use, but descriptive norms remained significantly associated with tobacco and marijuana use in the expected direction. The findings identify descriptive social norms in the school context as a particularly important area to address in adolescent substance use prevention efforts

季節変動を考慮した故障データに基づく寿命推定法

電気通信大学201

Associations between youth homelessness, sexual offenses, sexual victimization, and sexual risk behaviors : A systematic literature review

Homeless youth commonly report engaging in sexual risk behaviors. These vulnerable young people also frequently report being sexually victimized. This systematic review collates, summarizes, and appraises published studies of youth investigating relationships between homelessness, perpetration of sexual offences, experience of sexual victimization, and engagement in sexual risk behavior. A systematic search of seventeen psychology, health, and social science electronic databases was conducted. Search terms included “homeless*”, “youth”, “offend*”, “victimization”, “crime”, “rape”, “victim*”, and “sex crimes”. Thirty-eight studies were identified that met the inclusion criteria. Findings showed homeless youth commonly report being raped and sexually assaulted, fear being sexually victimized, and engage in street prostitution and survival sex. Rates of victimization and sexual risk behavior were generally higher for females. Given the paucity of longitudinal studies and limitations of current studies it is unclear whether homelessness is prospectively associated with sexual victimization or engagement in sexual risk behavior, and whether such associations vary cross-nationally and as a function of time and place. Future prospective research examining the influence of the situational context of homelessness is necessary to develop a better understanding of how homelessness influences the perpetration of sexual offences, experience of sexual victimization, and engagement in sexual risk behavior among homeless youth

Variation in the gene coding for the M5 Muscarinic receptor (CHRM5) influences cigarette dose but is not associated with dependence to drugs of addiction: evidence from a prospective population based cohort study of young adults

Background: The mesolimbic structures of the brain are important in the anticipation and perception of reward. Moreover, many drugs of addiction elicit their response in these structures. The M5 muscarinic receptor (M5R) is expressed in dopamine-containing neurones of the substantia nigra pars compacta and ventral tegmental area, and regulates the release of mesolimbic dopamine. Mice lacking M5R show a substantial reduction in both reward and withdrawal responses to morphine and cocaine. The CHRM5, the gene that codes for the M5R, is a strong biological candidate for a role in human addiction. We screened the coding and core promoter sequences of CHRM5 using denaturing high performance liquid chromatography to identify common polymorphisms. Additional polymorphisms within the coding and core promoter regions that were identified through dbSNP were validated in the test population. We investigated whether these polymorphisms influence substance dependence and dose in a cohort of 1947 young Australians.Results: Analysis was performed on 815 participants of European ancestry who were interviewed at wave 8 of the cohort study and provided DNA. We observed a 26.8% increase in cigarette consumption in carriers of the rs7162140 T-allele, equating to 20.1 cigarettes per week (p=0.01). Carriers of the rs7162140 T-allele were also found to have nearly a 3-fold increased risk of developing cannabis dependence (OR=2.9 (95%CI 1.1-7.4); p=0.03).Conclusion: Our data suggest that variation within the CHRM5 locus may play an important role in tobacco and cannabis but not alcohol addiction in European ancestry populations. This is the first study to show an association between CHRM5 and substance use in humans. These data support the further investigation of this gene as a risk factor in substance use and dependence.<br /

Adolescent predictors of young adult cyberbullying perpetration and victimization among Australian youth

Purpose: The purpose of the current article was to examine the adolescent risk and protective factors (at the individual, peer group, and family level) for young adult cyberbullying perpetration and victimization. Methods: Data from 2006 (Grade 9) to 2010 (young adulthood) were analyzed from a community sample of 927 Victorian students originally recruited as a statewide representative sample in Grade 5 (age, 10–11 years) in 2002 and followed-up to age 18–19 years in 2010 (N = 809). Participants completed a self-report survey on adolescent risk and protective factors and traditional and cyberbullying perpetration and victimization and young adult cyberbullying perpetration and victimization. Results: As young adults, 5.1% self-reported cyberbullying perpetration only, 5.0% reported cyberbullying victimization only, and 9.5% reported both cyberbullying perpetration and victimization. In fully adjusted logistic regression analyses, the adolescent predictors of cyberbullying perpetration only were traditional bullying perpetration, traditional bullying perpetration and victimization, and poor family management. For young adulthood cyberbullying victimization only, the adolescent predictor was emotion control. The adolescent predictors for young adult cyberbullying perpetration and victimization were traditional bullying perpetration and cyberbullying perpetration and victimization. Conclusions: Based on the results of this study, possible targets for prevention and early intervention are reducing adolescent involvement in (traditional or cyber) bullying through the development of social skills and conflict resolution skills. In addition, another important prevention target is to support families with adolescents to ensure that they set clear rules and monitor adolescents' behavior. Universal programs that assist adolescents to develop skills in emotion control are warranted

Excluding students from school. A re-examination from a children’s rights perspective

School exclusion including school suspension is common in Western industrialised countries and has negative effects on excluded students such as alienation from and dropping out of school and engaging in antisocial and violent behaviour. Australia is a signatory to the United Nations Convention on Children’s Rights. The CRC sets out a framework to document and evaluate school policies and practices and specific sections relate to the use of school exclusion (e.g., repeated suspension constitutes the denial of education and reflects failure to guarantee access to education, Article 28 of the CRC). However, in the Australian debates about the use of school suspension and expulsion, rarely is the children’s rights to an education perspective adopted. In this paper, the issues around the use of school suspension are reconsidered through a children’s rights lens. It is concluded that such a view requires consideration in Australia discussions about school exclusion.</jats:p

Students' experiences of school suspension

Issue addressed: School inclusion and academic attainment are key social determinants of health. Students who have been suspended from school are more likely to disengage from school and consequently not receive the health promoting benefits of social inclusion and academic achievement. This study sought to explore the experiences of students who have been previously suspended (i.e. had experienced school exclusion). Methods: Seventy-four previously suspended adolescents from five schools in the state of Victoria, Australia, completed a written questionnaire. Students reported their understanding of the process of being suspended; what they did and with whom they spent the day(s) of suspension; and their perceptions of their return to school post-suspension. Results: While suspended, a minority of suspended students received adult supervision and most suspended students participated in benign leisure activities. Upon return to school, students reported diminished teacher assistance and found that suspension did not help resolve the underlying issues that lead to the suspension. Conclusions: Removal of a student displaying problem behaviours from the classroom may provide temporary relief to the school community but suspended students report minimal benefits from suspension. Suspension removes the potential pro-social normative influences of school and provides an opportunity to establish antisocial peer networks. Suspended students appear to perceive a stigma upon their return to school, further diminishing an already tenuous school relationship. So what?: School suspension exposes disadvantaged students to several negative social determinants of health. Students displaying problem behaviours would benefit from interventions that maintain the student’s relationship with school. Should suspension be necessary, schools could assist by ensuring that suspended students receive appropriate adult supervision and a formal reintegration to school to promote social inclusion and academic attainment, two recognised key determinants of health

The role of risk and protective factors in the modification of risk for sexual victimization, sexual risk behaviors, and survival sex among homeless youth: A meta-analysis

Youth homelessness is a multifaceted and significant social problem. For many homeless youth, the risk for exposure to sexual exploitation is high, with the experience of sexual victimization and engaging in sexual risk behaviors and survival sex commonplace. This meta‐analysis appraised internationally published literature to investigate the role of risk and protective factors in modifying the occurrence of sexual victimization, sexual risk behaviors, and survival sex among homeless youth. A comprehensive search of psychology, sociology, medicine, health, and criminology electronic abstraction databases was conducted for the period 1990–2016. Search terms included “homeless,” “rape,” “sexual victimization,” “unsafe sex,” and “survival sex.” The perpetration of sexual offences was included in the search strategy. Eighteen studies, examining sexual victimization, sexual risk behavior, and survival sex, met the inclusion criteria and were included in the meta‐analysis. All but two studies were conducted in the United States. No retrieved studies examined sexual offending; hence, this could not be included in the meta‐analysis. Findings showed that substance use, exposure to violence and crime (as victims and perpetrators), childhood abuse, sexual behavior, and peers' antisocial and sexual behavior were unique factors increasing the likelihood for each of sexual victimization, engagement in sexual risk behavior, and engagement in survival sex. Protective factors were peer and family social support. Moderator analyses showed that the influence of risk factors may differ based on study design, sample size, study country of origin, and participant age and gender. Findings suggest that risk and protective factors may be important mechanisms by which to modify the occurrence of adverse sexual behavior outcomes and better contextualize prevention and early intervention strategies for homeless youth

Sexual risk behaviors, sexual offenses, and sexual victimization among homeless youth: A systematic review of associations with substance use

The use of substances among youth experiencing homelessness is an important issue in the context of addressing the developing burden of morbidities arising due to illness, injury, physical and mental health concerns, and low rates of health care utilization among this population group. Youth experiencing homelessness report engaging in and being victimized by various forms of sexual behavior. Of interest in this systematic review were published studies investigating substance use in its association with perpetration of sexual offenses, engagement in sexual risk behavior, or experience of sexual victimization among homeless youth. A systematic search of 12 psychology, health, and social science electronic databases was conducted. Search terms included ‘‘homeless*,’’ ‘‘youth,’’ ‘‘sex crimes,’’ ‘‘sexual victimization,’’ ‘‘survival sex,’’ ‘‘rape,’’ ‘‘drugs,’’ and ‘‘substance abuse.’’ Twenty-three studies were identified that met the inclusion criteria. No studies statistically examining substance use in its association with perpetrating sexual offenses were located. Findings showed substance use was generally associated with sexual risk behavior or sexual victimization; however, it remains unclear whether substance use precedes or follows these behaviors and experiences. It is possible substances are used by homeless youth as a means of coping with sexual risk behavior and victimization. Implications of the review findings in relation to prevention and intervention approaches aimed to decrease the incidence and severity of health concerns among homeless youth are discussed