Hand function speed was assessed with the Jebsen Taylor Hand Function Test (JTHFT), which has been shown to be reliable and normative for children22, 23). In this study, the subtests to assess hand function included turning over cards 3 × 5 inches (7.5 cm × 12.5 cm) in size, simulated feeding, picking up small common objects, stacking checkers, picking up large objects, and picking up large heavy objects. The time (in seconds) taken to perform seven fine motor hand tasks was measured.