The need to understand better the complex problems that can reflect the profile of a developmental disability seems to be served by multidimensional solutions. Therefore this paper will present the results of a transdisciplinary assessment of sensory motor and psychomotor skills of children with developmental disability. Subjects were 19 children, eleven with mild mental retardation and seven with developmental disabilities. The mean age was 7.3 years old. The instruments used were the LOSKF- 18, the sensory profile and a music rhythmic test. In interpreting the results it appears that the important cross-correlations found between LOS-KF-18, the sensory profile and the music rhythmic test conform to theoretical precedents and inquiring data. All correlations are statistically significant. A multidimensional assessment such as the transdisciplinary approach can provide a more functional profile of the child with developmental disability since it refers to the correlation between functional skills. Further research is needed to determine the correlation between sensory motor and psychomotor development in order to determine the best practices for the intervention in children with developmental disability.