Identification of factors that can modify peer group influence on adolescent alcohol use

My PhD thesis examined the effect of peer influence on the development of adolescent alcohol use and identified appropriate target points for preventive intervention. The project findings hold unique relevance to efforts in understanding how peer processes are similar or distinct in different cultural contexts at different periods in adolescent development.

The association between sports participation, alcohol use and aggression and violence: a systematic review

Objectives
To review the current research on alcohol-related violence and sports participation.

Methods
The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were used to identify relevant studies for inclusion. A search of six databases (EBSCOhost) was conducted.

Results
A total of 6890 studies was were identified in the initial search. Of these, 11 studies met the inclusion criteria. The majority of the studies were from the US (n = 10) and focused on collegiate athletes (n = 7), adolescents (n = 3), professional/former professional athletes (n = 1).

Conclusion
The reviewed research indicates higher rates of alcohol use and violence in athlete populations when compared against non-athlete populations. Masculinity, violent social identity and antisocial norms connected to certain sports stand out as potential factors that may impact the association between sport and violence in athlete populations.

Alcohol, masculinity, honour and male barroom aggression in an Australian sample

Introduction and Aims
The link between alcohol and men's aggression is well established, although growing evidence also points to individual and learned social factors. The aim of the present study was to investigate the relationships between male alcohol-related aggression (MARA) among young Australian men and heavy episodic drinking, trait aggression, masculinity, concerns about social honour and expected positive consequences of MARA.

Design and Methods
The total sample comprised 170 men aged 18–25 years who completed an online questionnaire exploring beliefs and attitudes towards MARA.

Results
Those who reported heavy episodic drinking were more likely to be involved in an incident of MARA. In addition, those who were involved in MARA had higher levels of trait aggression, concern for social honour and expected positive consequences of aggression in bars than did those without such involvement. The relationship between socially constructed masculinity factors (a combined variable reflecting masculinity, social honour and expected positive consequences) and MARA was mediated by heavy episodic drinking. Social honour accounted for almost all of the predictive power of masculinity factors. Heavy episodic drinking and trait aggression remained significant predictors of MARA in a multivariate model.

Discussion and Conclusions
The findings from the current study may assist in developing preventative techniques for young men which target masculinity concerns and the consequences of participating in MARA.

The impact of continuous versus intermittent high frequency stimulation of the nucleus accumbens shell on ethanol preference and circadian locomotor activity in alcohol preferring rats

This study aimed to investigate the effect of different patterns of high-frequency stimulation at the nucleus accumbens shell on ethanol preference and circadian locomotor activity in adult male alcohol preferring (P) and nonpreferring (NP) rats.

The relationship between the density of alcohol outlets and parental supply of alcohol to adolescents

This study investigated whether the number of alcohol outlets per 10,000 population in a given area (density) influenced parental supply of alcohol to adolescents; differences in Australian born and acculturating parents were also examined. A state-representative student survey in Victoria identified that the majority of adolescents (55%) reported that they had used alcohol in the past 12 months; 34 % of those who had consumed alcohol reported that it had been supplied by their parents. Multilevel modelling identified that there were no overall effects of density, however there were different effects based on parent country of birth and type of license. Specifically, each unit increase in the density of takeaway liquor stores increased the likelihood by 2.03 that children with both Australian-born parents would be supplied alcohol. Adolescents with both migrant parents on the other hand, had a 1.36 increased risk of being supplied alcohol as the density of outlets requiring at-venue consumption increased. The findings of this study suggest that in Australia, alcohol outlet density is associated with parental supply of alcohol to children, with this effect moderated by the cultural background of the parent and type of outlet density. Future research should investigate the association between the density of alcohol outlets and public approval of parents supplying alcohol to adolescents.