Project P.A.C.E., Inc. (PACE) was founded in 1992 by Katherine A. Calouri, Ph.D. and Eric Hamblen, a husband and wife team, who have each spent over 20 years working with individuals with Autism Spectrum Disorders and their families. Dr. Calouri earned her Ph.D. from UCLA where she supervised the Clinic for the Behavior Treatment of Children under the supervision of Dr. Ivar Lovaas. Eric Hamblen also worked with Dr. Lovaas. The inclusion of RDITM (Relationship Development Intervention) into the PACE model was a natural addition. Eric Hamblen was supervised in his certification in RDITM by Dr. Steve Gutstein. Steve Ryan was supervised in his certification in RDITM by Dr. Rachelle Sheely. Kathi Calouri received her training in RDITM from Dr. Rachelle Sheely.