I have research interests in two areas of statistical methodology, one area of application. I also have a general aspiration to be broadly knowledgeable about many areas of applied statistics. My methodological interests are in measurement error and non-parametric regression (smoothing). I have been especially interested in the links between those areas and mixed / random effect / Bayesian regression models. That research (actually) led to long-term applied collaborations with several groups in Kinesiology and public health. That work has been aimed at developing methods to estimate aspects of physical activity and inactivity from accelerometers and other devices.