Among the most exciting aspects of rehabilitation robotics lie in their ability to collect large amounts of data on the kinematics and other aspects of movement.Robotic devices therefore may help us answer the many questions surrounding stroke recovery. Many conventional measures of stroke recovery address specific movement patterns or arbitrary functional tasks, with limited ability to parse out true motor recovery from learned compensation. Kinematic data, on the other hand, provides a direct measurement,which may be distilled into new insight on stroke recovery.