Adolescents involved in bullying can be at risk of developing behavioural problems, physical health problems and suicidal ideation. In view of this, a quantitative research design using a cross-sectional study was conducted to determine the prevalence of bullying and associated individual, peer, family and school factors. The study involved 4469 Malaysian public-school students who made up the response rate of 89.4%. The students were selected using a randomized multilevel sampling method. The study found that 79.1% of student respondents were involved in bullying as perpetrators (14.4%), victims (16.3%), or bully–victims (48.4%). In a multivariate analysis, the individual domain showed a significant association between students’ bullying involvement and age (OR = 1.38; 95% CI 1.12–1.70), gender (OR = 1.73; 95% CI 1.47–0.91), ethnicity (OR = 0.66; 95% CI 0.47–0.91), duration of time spent on social media during the weekends (OR = 1.43; 95% CI 1.09–1.87) and psychological distress level (OR = 2.55; 95% CI 1.94–3.34). In the peer domain, the significantly associated factors were the number of peers (OR = 0.69; 95% CI 0.56–0.86) and frequency of quarrels or fights with peers (OR = 2.12; 95% CI 1.24–3.26). Among the items in the school domain, the significantly associated factors were students being mischievous in classrooms (OR = 1.52; 95% CI 1.06–2.06), student’s affection towards their teachers (OR = 1.53; 95% CI 1.06–2.20), frequency of appraisal from teachers (OR = 1.49; 95% CI 1.16–1.94), frequency of friends being helpful in classrooms (OR = 1.92; 95% CI 1.09–3.38) and frequency of deliberately skipping class (OR = 2.91; 95% CI 2.90–1.72). As a conclusion, the study revealed high levels and widespread bullying involvement among students in Malaysia. As such, timely bullying preventions and interventions are essential, especially in terms of enhancing their mental health capacity, which substantially influences the reduction in the prevalence rates of bullying involvement among students in Malaysia.

Juvenile delinquency is always seen as a public health problem which needs intervention at various levels. Identifying which factors may lead juveniles to delinquency is a long-standing question among criminologists. This remains the case in Malaysia. There are studies that have explored the impact of problem-solving skills, low socioeconomic status, and gender differences in predicting the delinquent behavior of youth in Malaysia. However, very few studies have aimed to find an in-depth understanding of the effects of family roles and peer pressure on delinquency in Malaysia. The present qualitative research was designed to fill this gap in the literature. In-depth interviews were conducted with 12 young male prisoners (juvenile delinquents) in Malaysia to explore the influences of family life and peer pressure on delinquency. The current study showed that parental un-involvement, parent separation, peer pressure, criminal gang membership, and parents’ involvement in crime were the important factors for involvement in delinquency. The findings revealed the importance of guidance and counseling for parents and adolescents, to help them cope with life challenges and to build their social and emotional skills, as well as the necessity of appointing school psychologists and public health experts to help the youths become valuable individuals.