Autism Spectrum Disorders(Interventions and Treatment for Children and Youth)Simpson R.L.2005では、RDIを以下のように評価している。
RDI addresses an important area relaed to autism. Howerever, in spite of the face validity for the RDI approach, there is an absence of scientific evidence to support the program, and evidence that RDI is more effective than other social interaction and social support program is lacking.Thus is a glaring need for validationn and scitific support of this method.