Joby John, ESM doctoral student, will present two posters titled "Trial to Trial Dynamics: Stability Variability and Performance in Human Movement" (authored by Joby John and Joseph P.Cusumano) and "Body-Goal Variability Analysis of Performance, with Application to an Aiming Task - Paola Cesari" (authored by Joseph P.Cusumano, Joby John, and Matteo Bertucco) at Progress in Motor Control VI in Sao Paulo, Brazil, August 9-12, 2007.