The purpose of this study was to clarify the voluntary movement characteris tics of children with mental retardation by applying the Developmental Voluntary Move ment Test (DVMT) which was developed by Tanaka (1989). The subjects were 36 children with mental retardation who were attending a special school for mentally retarded. They were individually tested by means of the Developmental Voluntary Movement Test at school. Results showed that DVMT scores correlated with Mental Age but not with

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... onologi cal Age, and subjects who had a higher DVMT score tended to walk at an earlier age. The mental age at which 90% of the retarded children acquired in the sub-category items was compared with that of normal children. The retarded children demonstrated the most difficulties in the facial-oral category.