Difference levels of motor outcomes were evaluated with the model of Haley et al. (1993). At the motor control and motor skills level, the accuracy and speed of specific movements were measured. For purposes of this study, the motor control and motor skill variables that were measured included in-hand manipulation, pencil and scissors grasping patterns, eye-hand coordination, and grasping strength. All these qualitative motor control and motor skills variables are believed to underlie adaptive motor function or functional performance as measured with the PEDI.