My research program uses an interdisciplinary approach to describe cognitive and behavioral development in children with Down syndrome, as well as other neurogenetic and developmental disorders. Development in both typically developing children and children with chromosomal disorders, such as Down syndrome, is a complex and dynamic process (Karmiloff-Smith, 1997; Thelen & Smith 1994). Therefore, I am particularly interested in examining developmental trajectories over time in this population using both laboratory-based measures and ecologically valid measures from the everyday context to consider the whole child in the developmental process.