Originally established in 1989 at the University of Essex to house the British Household Panel Survey (BHPS), ISER has grown into a leading centre for the production and analysis of longitudinal studies. It encompasses the ESRC Research Centre on Micro-Social Change and the successor to the BHPS, Understanding Society. As well as providing unrivalled postgraduate study opportunities, ISER also houses an internationally-renowned Microsimulation Unit which develops and runs the tax and benefit model, EUROMOD.