Research on Statistical Models for Childhood Development

Joint modelling of repeated measurement and time-to-event data [Diggle, Lewis, Copas] (Developmental Psychology, Statistical modelling)

Studies in Developmental Psychology typically acquire data of distinct kinds: measurements may be continuous, discrete or categorical and are taken at a pre-specified set of follow-up times. We are developing likelihood-based statistical inference to assess change in performance of young children on repeated measures of executive functions - i.e. tests of working memory, set shifting and inhibitory control. To do this we build random-effect-transition regression models that take into account variability between individuals, dependence between results on successive testing occasions and inter-relationships between tests.