conducted a detailed case analysis of Corbet's reported findings on children on the Autism Spectrum Disorder. Gerittsen showed that for this particular research an individual case study design would have been the more appropriate research design method. His individual case study analysis captured with higher fidelity the effect of Tomatis Method in each of the participants. Given individual differences of children on the Autism Spectrum a group design study could omit to address the significant improvements which Gerittsen noted occurred in 60% of the participants in the areas of language, daily living skills, social interaction and motor skills.