Foreword / Richard Wilkinson -- Theory and methods -- Meanings and uses of social capital in the mental health field / Kwame McKenzie and Trudy Harpham -- Social risk, mental health and social capital / Kwame McKenzie -- Systematic review of the methods used in studies of social capital and mental health / Mary de Silva -- International studies -- Ethnographic investigation of social capital and mental health in Gospel Oak, London, UK / Rob Whitley -- Social capital and quality of life and mental health in Maastricht, the Netherlands : the neighbourhood matters / Marjan Drukker, Charles Kaplan and Jim van Os -- Social capital and mental health in the urban South, USA : a quantitative study / Carey Usher -- Social capital and mental health of women living in informal settlements in Durban, South Africa, and Lusaka, Zambia / Liz Thomas -- Social capital and youth mental health in Cali, Columbia / Trudy Harpham, Emma Grant and Simon Snoxell -- Conclusion -- The state of the art / Kwame Mckenzie.