Dr. Guiou received her initial training in the use of learning theory and behavior analysis to treat children diagnosed with ASD from Drs. Ivar Lovaas and Jacquelyn Wynn while pursuing her undergraduate degree at UCLA. She served in a variety of clinical positions, as a research assistant on a follow-up to Dr. Lovaas' landmark 1987 study, and as a teaching assistant and guest lecturer. She received her Ph.D. at UCLA, where she was mentored by Dr. Connie Kasari, a leading researcher in social-emotional development of children with ASD. Dr. Guiou worked on projects examining the ability of children with ASD to mask their feelings of disappointment, the relative efficacy of interventions on social skills and playground activities in an elementary school setting, and on a long-term follow-up to an intervention targeting symbolic play and joint attention. While at UCLA, Dr. Guiou also trained as a psychometrist at the UCLA Autism Evaluation Clinic under the direction of Dr. BJ Freeman. While at Nationwide Children's, Dr. Guiou has collaborated with The Ohio State University Professor Mary Fristad, PhD., ABPP on the development of a Multi-Family Psychotherapy Psycho-Educational group therapy, and involves concurrent therapy groups for both children with ASD and their parents.