My work involves the statistical analysis of large-scale and complex social science datasets. These datasets include both social surveys and administrative data resources. The analysis of longitudinal (i.e. repeated contacts) data is an area in which I specialize. The main substantive focus of my work is social stratification. I have particular interests in the sociology of youth and youth transitions, education and sport. I also have interests in demography, with a focus on migration, and to a lesser extent fertility. I have also undertaken work in the area of digital social research. My methodological research focuses on a range of challenges, which include topics such as quasi-variance estimation, missing data and multiple imputation, and the graphical representation of data. I am attempting to promote the ‘Public Awareness of Social Statistics’.