The paper provides a framework for reviewing developments in thinking about social capital over the last decade and for assessing future prospects. It argues for giving particular value to social capital as a phenomenon (conceptual and empirical) which is most effective when viewed in interaction with other elements of analysis or policy. Two forms of interaction are addressed: between bonding and bridging social capital; and between human and social capital. The paper then tracks some of the developments in the policy research debate in order to illustrate the dilemmas involved in the deployment of the concept. The fourth section poses some methodological questions and possible future directions.social capital, human capital, OECD,