BACKGROUND: The Melbourne Assessment of Unilateral Upper Limb Function is a valid tool for measuring quality of upper-limb movement in children ages 5 to 15 with cerebral palsy. This study presents the first phase in establishing the validity of a modified version of the assessment for children ages 2 to 4. OBJECTIVE: We sought to determine whether children without neurological impairment scored within the top 5% on the modified assessment, to investigate compliance with test demands, and to investigate the relationship between the modified tool and the Quality of Upper Extremity Skills Test. METHOD: The test was modified and administered to 32 children without neurological impairment ages 2 to 4. RESULTS: All children ages 2.5 to 4 scored as expected and were compliant with test demands. CONCLUSION: The Modified Melbourne Assessment may be used with children ages 2.5 to 4 without neurological impairment. Investigation with children with neurological impairment is now indicated.