What is the difference between autism and PDD/NOS?

    Published: 06-16-2009
    Views: 29,141
    Autism expert Peggy Halliday discusses the differences between autism and PDD/NOS.

    Peggy Halliday

    Peggy Halliday is a board certified associate behavior analyst who has specialized in autism education for the past ten years. She is the Director of Outreach Services at the Virginia Institute of Autism (VIA) in Charlottesville, VA. VIA is a non-profit organization which provides a day school and other resources for families, educators, and other professionals seeking services, training or information about autism and evidence-based interventions. The Institute operates a year-round school for students ages 2-22, a 700-volume library, training workshops, internships for undergraduate and graduate students and teachers, and customized trainings for schools. Peggy supervises a wide range of outreach services, including development and supervision of comprehensive, home-based early intervention programs incorporating naturalistic, incidental, and structured teaching using the principles of applied behavior analysis; training for parents and home instructors; skills assessments, functional behavior assessments and intervention plans, and consultation on Individual Education Plan goals. She has presented trainings and workshops at state and national conferences.

    Host: What is the difference between autism and PDD-NOS?

    Peggy Halliday: To have a diagnosis of autism you have to have six impairments as we have talked about, two in social interactions, one each in communication and behavior. If you have similar symptoms of autism but you do not have the criteria, you do not reach the number of deficits that would have to have to be diagnosed with classic autism you will usually be given a diagnosis of PDD-NOS.