The closing lunch-talk for the year was by Associate Professor Madelene Sta Maria from De La Salle University, Philippines. The topic of the lunch talk was on Examining the Contributors to Youth Health from an Ecological Perspective. The ecological perspective was first presented as a viable tool for understanding the development of health outcomes among the youth by Urie Bronfenbrenner in the latter part of the 1900s. Since then it has been increasingly used for the past 20 years in studies on processes of risk and protection within the social contexts such as the family, the school and the peer group. By allowing a conceptualization of the young person’s interactions within social contexts in terms of bi-directional, or dyadic processes, the perspective permits researchers to determine in what ways interactions within social contexts influence health-risk behaviours and mental health among the youth. The talk presented the main propositions of the ecological theory and an overview of recent research utilizing this theory to examine the determinants of youth health-risk behaviours and mental health.