Developmental Disabilities Research


Young child with down syndrome

Developmental Disabilities


According to the Developmental Disabilities Assistance and Bill of Rights Act of 2000 (DD Act), a “developmental disability” is a severe, chronic disability that is caused by a mental or physical impairment (or both), that occurs before the age of 22 years, is likely to continue indefinitely and results in “substantial” functional limitations in 3 or more of the following areas of major life activity:

  1. Self-care
  2. Receptive and expressive language
  3. Learning
  4. Mobility
  5. Self-direction
  6. Capacity for independent living
  7. Economic self-sufficiency

“Substantial” means individuals with DD who receive services must need a combination of special services and individualized supports that will last all their lives or for a long time.


There are over 600,000 people in California who meet the federal definition of DD.  California has a system of 21 regional centers authorized by the Lanterman Developmental Disabilities Services Act, California legislation that provides entitlement services to people who meet the state definition of DD, which is the same as the definition in the DD Act, except the condition has to occur before the age of 18 and must be caused by:

  • Intellectual disabilities
  • Cerebral palsy
  • Autism spectrum disorders
  • Epilepsy, or
  • Any condition that requires services similar to what a person with intellectual disabilities would need.

Regional Centers serve slightly over 200,000 people who meet the state definition of DD.


Current Projects

Parents' Experience and Satisfaction with the Regional Center Parent Navigator Project (PI: Christine Mirzaian)

Physician Satisfaction with Regional Center Parent Navigator Project (PI: Christine Marzaian)

Assessing the Feasibility of Developing a Structured Weight Management Program for

Overweight and Obese Adolescents and Young Adults with Spina Bifida using a Mobile Health App (Co-Investigators: Alex Van Speybroeck, Kathryn Smith)

Survey on the transition needs of youth and young adults with intellectual and developmental disabilities (PI: Cecily Betz)

Assessment of the Systems of Care for Children with Congenital Zika Virus Infection or Other Neurodevelopmental Disabilities in the Pacific Basin (PI: Alexis Deavenport-Saman)

Pediatric Device Patient Database (PD2) (PI: Juan Espinoza)

Team Care for 22q (PI: Alexis Johns)

Oral health status in children with feeding disorders- A Pilot Study (PI: Jose Polido)



Brennan RA, Larson J, Deavenport-Saman A, Kreutzer C. (2022). The role of the registered dietitian nutritionist in California group homes for weight stabilization of individuals with intellectual and developmental disabilities. Connections. Dietetics in Health Care Communities a Dietetic Practice Group of the Academy of Nutrition and Dietetics. 46(2), 18-22.

Betz C. L. (2021). Nursing's Influence on the Evolution of the Field of Health Care Transition and Future Implications. Journal of pediatric health care : official publication of National Association of Pediatric Nurse Associates & Practitioners, 35(4), 408–413.

Betz, C. L., Mannino, J. E., Disabato, J. A., & Marner, V. (2022). Health care transition planning: A potpourri of perspectives from nurses. Journal for specialists in pediatric nursing : JSPN, e12373. Advance online publication.

Betz, C. L., Mannino, J. E., & Disabato, J. A. (2021). Survey of US pediatric nurses' role in health care transition planning: Focus on assessment of self-management abilities of youth and young adults with long-term conditions. Journal of child health care : for professionals working with children in the hospital and community, 25(3), 468–480.

Cheak-Zamora N, Betz C.L, & Mandy T (2022). Measuring Health Care Transition: Across Time and into the Future Journal of Pediatric Nursing, 64, 91-101,

Mannino, J. E., Disabato, J. A., Betz, C. L., Hudson, S. M., & Marner, V. A. (2022). Health Care Transition Planning: Educational Needs of Pediatric Nurses and Pediatric Nurse Practitioners. Journal of pediatric health care : official publication of National Association of Pediatric Nurse Associates & Practitioners, S0891-5245(22)00084-0. Advance online publication.

Espinoza, J. C., Chin, S. W., Shah, P. Tut, M. Raymond, J. K. (2022). Proposing a Practical, Simplified Framework for Implementing Integrated Diabetes Data and Technology Solutions, Frontiers in Clinical Diabetes and Healthcare, 3,,

Espinoza, J., Xu, N. Y., Nguyen, K. T., & Klonoff, D. C. (2021). The Need for Data Standards and Implementation Policies to Integrate CGM Data into the Electronic Health Record. Journal of diabetes science and technology, 19322968211058148. Advance online publication.

Espinoza, J., Shah, P., Nagendra, G., Bar-Cohen, Y., & Richmond, F. (2022). Pediatric Medical Device Development and Regulation: Current State, Barriers, and Opportunities. Pediatrics, 149(5), e2021053390.

Paraszczuk, A. M., Feeg, V. D., Betz, C. L., & Mannino, J. E. (2021). Psychometric Testing of Family Centered Care (FCC) Instrument: A Mixed Methods Analysis of Pediatric Nurses and Their Workplace Perceptions of FCC. Journal of pediatric nursing, 61, 75–83.

Schmitt, C., Castro, J., Frelinger, J. & Yin, L. (2022). Febrile Illness in 3 Adolescent Patients, The pediatric infectious disease journal, 41, 85-86, doi: 10.1097/INF.0000000000003157