Gastrointestinal symptoms and their relation to physical and mental aspects in adults with an autism spectrum disorder (ASD) are poorly understood, despite their high prevalence. Therefore, the aim of this study is to examine psychological, behavioural and biological factors associated with gastrointestinal symptoms in adults with ASD (traits). We…

Objective: To develop a practical step-by-step approach to constructing narrative health interventions in response to the mixed results and wide diversity of narratives used in health-related narrative persuasion research. Method: Development work was guided by essential narrative characteristics as well as principles enshrined in the Health…

Objective: College students are a group at risk for contracting sexually transmitted infections (STIs). While they are generally well informed about STIs, they do not consistently use condoms. An important element in preventing STIs is safer sex communication, especially with a sexual partner. This may be difficult, however, because of a lack of…

Adolescence is a vulnerable period for the initiation and peak of many harmful risk-taking behaviors such as smoking, which is among the most addictive and deadliest behaviors. Generic metatheories like the theory of triadic influence (TTI) suggest that interrelated risk factors across multiple domains (i.e., intrapersonal and…

Young people living with HIV are challenged when it comes to exploring their sexuality. Their sex education is hampered by the fact that their preferences and attitudes towards sexual behaviour are little known about. In this study from the Netherlands, Q-methodology was used to identify sizeable and meaningful sub-groups sharing common attitudes…

We investigated whether the link between early pubertal timing and initiation of weekly alcohol use is mediated by changes in perceived parental alcohol-specific rule setting and changes in perceived proportion of drinkers in the peer group. Longitudinal data including 3 annual waves were used to estimate the hazard for adolescents to initiate…

Previous studies from a wide variety of European countries have demonstrated that low educated adolescents engage more frequently in health risk behaviors compared to high educated adolescents. The present study investigates the mediating roles of parental knowledge and time spent with peers in this relationship. Data were retrieved from a…

In this three-wave longitudinal survey, we investigated bi-directional longitudinal associations between best friends and adolescents' alcohol consumption. Additionally, since the relation between best friends and adolescents' drinking may be stronger if adolescents have not consumed alcohol yet, we examined this relation not only with regard to…

Heavy drinking and associated negative consequences remain a serious problem among college students. In a secondary analysis of data from two published study, the authors examine the correlation between minimum legal age to purchase and/or consume alcohol and rates of heavy drinking among college students in 22 countries. The published studies use…

This article describes the association of external and psychosocial factors on the stages of change for fruit and vegetable consumption, among 2,781 inhabitants, aged 18 to 65 years, in deprived neighborhoods (response rate 60%). To identify correlates of forward stage transition, an ordinal logistic regression model, the Threshold of Change Model…