Definition of ID or IDDS

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A brief look at the definition. What does it mean?
Intellectual Disability
According to the American Association on Intellectual and Developmental Disabilities (AAIDD), IDs are characterized by "limitations in both intellectual functioning and adaptive behaviors" (2013).
The condition or disability originates during a child's developmental period, that is anytime before he/she turns 18 years old (Bock, 2010).
Intellectual functioining refers to IQ ranges, but diagnosis of ID depends crucially on how the "impairments of mental abilities" affect an individual's   Adaptive Behaviors, which are skills people use to complete everyday tasks.  
American Association on Intellectual and Developmental Disabilities. (2013). Definition of Intellectual Disability. AAIDD. Retrieved from
Learn more by visiting the references below:
American Psychiatric Association. (2013). Intellectual Disability [Fact sheet]. Retrieved from  
Bock, R. U.S. Department of Health & Human Services, Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD). (2010). Intellectual and developmental disabilities. Bethesda, MD: Retrieved from
Carulla, L.S., Reed, G.M., Vaez-Azizi, L.M, Cooper, S.A., Leal, R.M., Bertelli, M., Saxena, S. (2011). Intellectual developmental disorders: towards a new name, definition and framework for “mental retardation/intellectual disability” in ICD-11. World Psychiatry, 10(3), 175–180.
National Dissemination Center for Children with Disabilities (NICHCY). U.S. Department of Health and Human Services, Administration for Children and Families. (2009). Intellectual disabilities formerly Mental Retardation (NICHCY Fact Sheet 8). Washington, DC: National Dissemination Center. Retrieved from
SF1. (2013, May 29). Rosa’s Law: Intellectual Disability Terminology Changes. Arizona Department of Education. Retrieved from
World Health Organization Regional Office for Europe. (2015). “Definition: intellectual disability.” Retrieved from