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HandWiki. Intellectual Disability. Encyclopedia. Available online: https://encyclopedia.pub/entry/30436 (accessed on 15 September 2026).
HandWiki. Intellectual Disability. Encyclopedia. Available at: https://encyclopedia.pub/entry/30436. Accessed September 15, 2026.
HandWiki. "Intellectual Disability" Encyclopedia, https://encyclopedia.pub/entry/30436 (accessed September 15, 2026).
HandWiki. (2022, October 20). Intellectual Disability. In Encyclopedia. https://encyclopedia.pub/entry/30436
HandWiki. "Intellectual Disability." Encyclopedia. Web. 20 October, 2022.
Intellectual Disability
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The content is sourced from: https://handwiki.org/wiki/Medicine:Intellectual_disability

Intellectual disability (ID), also known as general learning disability and formerly mental retardation (MR), is a generalized neurodevelopmental disorder characterized by significantly impaired intellectual and adaptive functioning. It is defined by an IQ under 70, in addition to deficits in two or more adaptive behaviors that affect everyday, general living. Intellectual functions are defined under DSM-V as reasoning, problem‑solving, planning, abstract thinking, judgment, academic learning, and learning from instruction and experience, and practical understanding confirmed by both clinical assessment and standardized tests. Adaptive behavior is defined in terms of conceptual, social, and practical skills involving tasks performed by people in their everyday lives. Once focused almost entirely on cognition, the definition now includes both a component relating to mental functioning and one relating to an individual's functional skills in their daily environment. As a result of this focus on the person's abilities in practice, a person with an unusually low IQ may still not be considered to have an intellectual disability. Intellectual disability is subdivided into syndromic intellectual disability, in which intellectual deficits associated with other medical and behavioral signs and symptoms are present, and non-syndromic intellectual disability, in which intellectual deficits appear without other abnormalities. Down syndrome and fragile X syndrome are examples of syndromic intellectual disabilities. Intellectual disability affects about 2 to 3% of the general population. Seventy-five to ninety percent of the affected people have mild intellectual disability. Non-syndromic, or idiopathic cases account for 30 to 50% of these cases. About a quarter of cases are caused by a genetic disorder, and about 5% of cases are inherited from a person's parents. Cases of unknown cause affect about 95 million people (As of 2013).

mental retardation functional skills clinical assessment

References

  1. Kaneshiro, Neil K. (April 21, 2015), Intellectual disability, U.S. National Library of Medicine, https://medlineplus.gov/ency/article/001523.htm, retrieved October 27, 2016 
  2. American Psychiatric Association (2013). "Highlights of Changes from DSM-IV to DSM-5". Diagnostic and Statistical Manual of Mental Disorders (Fifth ed.). Arlington, VA: American Psychiatric Publishing. p. 809. doi:10.1176/appi.books.9780890425596. ISBN 978-0-89042-555-8. https://archive.org/details/diagnosticstatis0005unse/page/809. 
  3. Queensland Government (July 30, 2015), Intellectual disability, https://www.qld.gov.au/disability/community/intellectual-disability/, retrieved October 27, 2016 
  4. "Identification and evaluation of mental retardation". American Family Physician 61 (4): 1059–67, 1070. February 2000. PMID 10706158. http://www.aafp.org/afp/20000215/1059.html. 
  5. "DSM Criteria that Best Differentiate Intellectual Disability from Autism Spectrum Disorder". Child Psychiatry and Human Development 48 (4): 537–545. August 2017. doi:10.1007/s10578-016-0681-0. PMID 27558812.  https://dx.doi.org/10.1007%2Fs10578-016-0681-0
  6. "Intellectual disability and its relationship to autism spectrum disorders". Research in Developmental Disabilities 30 (6): 1107–14. November–December 2009. doi:10.1016/j.ridd.2009.06.003. PMID 19604668.  https://dx.doi.org/10.1016%2Fj.ridd.2009.06.003
  7. "Stereotypy in Adults with Autism Spectrum Disorders: Relationship and Diagnostic Fidelity". Journal of Developmental and Physical Disabilities 20 (2): 155–165. 2008. doi:10.1007/s10882-007-9086-0.  https://dx.doi.org/10.1007%2Fs10882-007-9086-0
  8. Boat TF, Wu JT. (2015). Clinical Characteristics of Intellectual Disabilities. Mental Disorders and Disabilities Among Low-Income Children. (pp. 169–176). Retrieved from https://www.ncbi.nlm.nih.gov/books/NBK332877/
  9. "Definition of mentally retarded". Gale Encyclopedia of Medicine. http://medical-dictionary.thefreedictionary.com/mentally%20retarded. 
  10. "The ciliopathies: an emerging class of human genetic disorders". Annual Review of Genomics and Human Genetics 7: 125–48. September 2006. doi:10.1146/annurev.genom.7.080505.115610. PMID 16722803.  https://dx.doi.org/10.1146%2Fannurev.genom.7.080505.115610
  11. 3.0.CO;2-X. PMID 10398231.  https://dx.doi.org/10.1002%2F%28SICI%291096-8628%2819990730%2985%3A3%3C216%3A%3AAID-AJMG6%3E3.0.CO%3B2-X" id="ref_11">"X-linked mental retardation associated with cleft lip/palate maps to Xp11.3-q21.3". American Journal of Medical Genetics 85 (3): 216–20. July 1999. doi:10.1002/(SICI)1096-8628(19990730)85:3<216::AID-AJMG6>3.0.CO;2-X. PMID 10398231.  https://dx.doi.org/10.1002%2F%28SICI%291096-8628%2819990730%2985%3A3%3C216%3A%3AAID-AJMG6%3E3.0.CO%3B2-X
  12. "Mutations in PHF8 are associated with X linked mental retardation and cleft lip/cleft palate". Journal of Medical Genetics 42 (10): 780–6. October 2005. doi:10.1136/jmg.2004.029439. PMID 16199551.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1735927
  13. Bender, Bruce G. (1986). Genetics and Learning Disabilities. San Diego: College Hill Press. pp. 175–201. "Figure 8-3. Estimated full-scale IQ distributions for SCA and control children: 47,XXX (mean ~83), 45,X & Variant (mean ~85), 47,XXY (mean ~95), 47,XYY (mean ~100), Controls and SCA Mosaics (mean ~104)" 
  14. "Neurocognitive outcomes of individuals with a sex chromosome trisomy: XXX, XYY, or XXY: a systematic review". Developmental Medicine and Child Neurology 52 (2): 119–29. February 2010. doi:10.1111/j.1469-8749.2009.03545.x. PMID 20059514.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2820350
  15. McNeil, Donald G. Jr. (2006-12-16). "In Raising the World's I.Q., the Secret's in the Salt". The New York Times. https://query.nytimes.com/gst/fullpage.html?res=9E05E3D81231F935A25751C1A9609C8B63. 
  16. Wines, Michael (2006-12-28). "Malnutrition Is Cheating Its Survivors, and Africa's Future". The New York Times. https://www.nytimes.com/2006/12/28/world/africa/28malnutrition.html. 
  17. "Absence of arcuate fasciculus in children with global developmental delay of unknown etiology: a diffusion tensor imaging study". The Journal of Pediatrics 152 (2): 250–5. February 2008. doi:10.1016/j.jpeds.2007.06.037. PMID 18206698.  https://dx.doi.org/10.1016%2Fj.jpeds.2007.06.037
  18. "Definition of Intellectual Disability". http://aaidd.org/intellectual-disability/definition. 
  19. "What Is Intellectual Disability?". https://www.psychiatry.org/patients-families/intellectual-disability/what-is-intellectual-disability?_ga=1.127171085.1694806465.1485894944. 
  20. Lawyer, Liz (2010-11-26). "Rosa's Law to remove stigmatized language from law books". Ithaca, New York: The Ithaca Journal. http://www.theithacajournal.com/article/20101126/NEWS01/11260346/Rosa+s+Law+to+remove+stigmatized+language+from+law+books. "The resolution ... urges a change from the old term to "developmental disability"" 
  21. "Examining lifespan stage recognition abilities among adults with intellectual disability" (in en). Journal of Intellectual & Developmental Disability 45 (2): 110–118. 2019-04-11. doi:10.3109/13668250.2019.1580116. ISSN 1366-8250.  https://dx.doi.org/10.3109%2F13668250.2019.1580116
  22. IACAPAP Textbook of Child and Adolescent Mental Health. 2015. ISBN 978-0-646-57440-0. http://iacapap.org/iacapap-textbook-of-child-and-adolescent-mental-health. 
  23. Mash, E., & Wolfe, D. (2013). Abnormal child psychology. (5th ed., pp. 308–313). Wadsworth Cengage Learning.
  24. Hodapp, R.M., & Burack, J.A. (2006). Developmental approaches to children with mental retardation: A second generation? In D. Cicchetti & D. J. Cohen (Eds.), Developmental psychopathology, Vol. 3: Risk, disorder, and adaptation (2nd ed., pp. 235–267). Hoboken, NJ: Wiley.
  25. "Early educational intervention with disadvantaged children—To what effect?". Applied and Preventive Psychology 1 (3): 131–140. 1992. doi:10.1016/s0962-1849(05)80134-9.  https://dx.doi.org/10.1016%2Fs0962-1849%2805%2980134-9
  26. "Early childhood education: Young adult outcomes from the Abecedarian Project". Applied Developmental Science 6: 42–57. 2002. doi:10.1207/s1532480xads0601_05.  https://dx.doi.org/10.1207%2Fs1532480xads0601_05
  27. "Social-skills treatments for children with autism spectrum disorders: an overview". Behavior Modification 31 (5): 682–707. September 2007. doi:10.1177/0145445507301650. PMID 17699124.  https://dx.doi.org/10.1177%2F0145445507301650
  28. "Early language intervention for children with intellectual disabilities: a neurocognitive perspective". Research in Developmental Disabilities 32 (2): 705–12. 2011. doi:10.1016/j.ridd.2010.11.010. PMID 21159487.  https://dx.doi.org/10.1016%2Fj.ridd.2010.11.010
  29. "The social skills and social status of mainstreamed students with intellectual disabilities". Educational Psychology 22 (4): 391–411. 2002. doi:10.1080/0144341022000003097.  https://dx.doi.org/10.1080%2F0144341022000003097
  30. "Social inclusion of children with intellectual disabilities in a recreational setting". Intellectual and Developmental Disabilities 47 (2): 97–107. April 2009. doi:10.1352/1934-9556-47.2.97. PMID 19368488.  https://dx.doi.org/10.1352%2F1934-9556-47.2.97
  31. "Language delays, reading delays, and learning difficulties: interactive elements requiring multidimensional programming". Journal of Learning Disabilities 40 (5): 400–9. 2007. doi:10.1177/00222194070400050301. PMID 17915494.  https://dx.doi.org/10.1177%2F00222194070400050301
  32. "Parent-child interaction therapy for disruptive behavior in children with mental retardation: a randomized controlled trial". Journal of Clinical Child and Adolescent Psychology 36 (3): 418–29. 2007. doi:10.1080/15374410701448448. PMID 17658985.  https://dx.doi.org/10.1080%2F15374410701448448
  33. "Beginning reading interventions for children and adolescents with intellectual disability". The Cochrane Database of Systematic Reviews 2019 (12): CD011359. December 2019. doi:10.1002/14651858.CD011359.pub2. PMID 31805208.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=6894923
  34. 2.0.CO;2. ISSN 0895-8017. PMID 12186578.  https://dx.doi.org/10.1352%2F0895-8017%282002%29107%3C0376%3ABBSERA%3E2.0.CO%3B2" id="ref_34">"Benzodiazepine behavioral side effects: review and implications for individuals with mental retardation". American Journal on Mental Retardation 107 (5): 376–410. September 2002. doi:10.1352/0895-8017(2002)107<0376:BBSERA>2.0.CO;2. ISSN 0895-8017. PMID 12186578.  https://dx.doi.org/10.1352%2F0895-8017%282002%29107%3C0376%3ABBSERA%3E2.0.CO%3B2
  35. "Global, regional, and national incidence, prevalence, and years lived with disability for 301 acute and chronic diseases and injuries in 188 countries, 1990-2013: a systematic analysis for the Global Burden of Disease Study 2013". Lancet 386 (9995): 743–800. August 2015. doi:10.1016/S0140-6736(15)60692-4. PMID 26063472.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4561509
  36. Wickham, Parnell. Encyclopedia of Children and Childhood in History and Society. http://www.faqs.org/childhood/Re-So/Retardation.html. Retrieved 8 October 2010. 
  37. "An exploration of health, family and economic experiences of leprosy patients, Iran". Pakistan Journal of Biological Sciences 16 (18): 927–32. September 2013. doi:10.1080/02673843.2011.649565. PMID 24502149.  https://dx.doi.org/10.1080%2F02673843.2011.649565
  38. Porter, Roy; Wright, David (7 August 2003). The Confinement of the Insane: International Perspectives, 1800–1965. Cambridge University Press. ISBN 978-0-521-80206-2. https://books.google.com/books?id=i7ktMJZC_HsC. Retrieved 11 August 2012. 
  39. Armbrester, Margaret E. (1992). The Civitan Story. Birmingham, AL: Ebsco Media. pp. 74–75. 
  40. Wolfensberger, Wolf (January 10, 1969). "The Origin and Nature of Our Institutional Models". Changing Patterns in Residential Services for the Mentally Retarded. President's Committee on Mental Retardation, Washington, D.C.. http://www.disabilitymuseum.org/lib/docs/1909.htm?page=print. 
  41. "The ARC Highlights — Beyond Affliction: Beyond Affliction Document". Disabilitymuseum.org. http://www.disabilitymuseum.org/beyond-affliction/ba_shows.dir/revoluti.dir/highlights/subject/ng0002tx.html. 
  42. "Christmas in Purgatory & Willowbrook". Arcmass.org. http://www.arcmass.org/StateHousePolicy/RegulationandPolicyDebates/FernaldSchoolClosingandRICCIClass/FernaldNews/WhyTheFernaldCenterShouldClose/ChristmasinPurgatoryWillowbrook/tabid/692/Default.aspx. 
  43. "Fernald School Closing and RICCI Class". Arcmass.org. http://www.arcmass.org/StateHousePolicy/RegulationandPolicyDebates/FernaldSchoolClosingandRICCIClass/tabid/175/Default.aspx. 
  44. Fernald, Walter E. (1912). The imbecile with criminal instincts. Fourth edition. Boston: Ellis. OCLC 543795982. https://www.worldcat.org/oclc/543795982
  45. Duncan, P. Martin; Millard, William (1866). A manual for the classification, training, and education of the feeble-minded, imbecile, and idiotic. Longmans, Green, and Co.
  46. Rafter, Nicole Hahn (1998). Creating Born Criminals. University of Illinois Press, ISBN:978-0-252-06741-9
  47. Cummings, Nicholas A.; Wright, Rogers H. (2005). "Chapter 1, Psychology's surrender to political correctness". Destructive trends in mental health: the well-intentioned path to harm. New York: Routledge. ISBN 978-0-415-95086-2. 
  48. Rosa's Law, Pub. L. 111-256, 124 Stat. 2643 (2010). https://www.govinfo.gov/content/pkg/STATUTE-124/pdf/STATUTE-124-Pg2643.pdf
  49. Ansberry, Clare (20 November 2010). "Erasing a Hurtful Label From the Books". The Wall Street Journal. https://www.wsj.com/articles/SB10001424052748704865104575588273153838564. "Decades-long quest by disabilities advocates finally persuades state, federal governments to end official use of 'retarded'." 
  50. World Health Organization (2018). "ICD-11 for Mortality and Morbidity Statistics (2018): 6A00 Disorders of intellectual development". https://icd.who.int/browse11/l-m/en#/http%3a%2f%2fid.who.int%2ficd%2fentity%2f605267007. 
  51. "Intellectual developmental disorders: towards a new name, definition and framework for "mental retardation/intellectual disability" in ICD-11". World Psychiatry 10 (3): 175–80. October 2011. doi:10.1002/j.2051-5545.2011.tb00045.x. PMID 21991267.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3188762
  52. Cook, John (5 July 2001). "The "R" Word". Slate. http://www.slate.com/id/111355/. 
  53. Columbia Electronic Encyclopedia, 2013 http://encyclopedia2.thefreedictionary.com/mentally+retarded
  54. "cretin". The American Heritage Dictionary of the English Language, Fourth Edition. Houghton Mifflin Company. 2006. http://dictionary.reference.com/browse/cretin. 
  55. A Historical Dictionary of Psychiatry. Oxford University Press. 2005. pp. 243. ISBN 978-0-19-803923-5. https://books.google.com/books?id=M49pEDoEpl0C&pg=PA243. 
  56. Марилов, В. В. (2002) (in ru). Общая психопатология. Moscow: Издательский центр «Академия». p. 84. ISBN 978-5-7695-0838-7. 
  57. "On the diagnostic term "Down's disease"". Medical History 23 (1): 102–4. January 1979. doi:10.1017/s0025727300051048. PMID 153994.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1082401
  58. "Worst Word Vote". Ouch. BBC. 2003. http://www.bbc.co.uk/ouch/yourspace/worstwords/. 
  59. "SpecialOlympics.org". SpecialOlympics.org. http://www.specialolympics.org/coalition.aspx. 
  60. "R-Word.org". R-Word.org. 2010-06-18. http://r-word.org/. 
  61. [Levine, Albert J.; Marks, Louis (1928). Testing Intelligence and Achievement. Macmillan. OCLC 1437258. Retrieved 23 April 2014. Lay summary (23 April 2014)]
  62. "LevineMarks1928p131"
  63. "KamphausWinsoretalpp57–58"
  64. "Journals". http://aaidd.org/publications/journals. 
  65. "Intellectual Disability: Definition, Classification, and Systems of Supports (11th Edition)". http://aaidd.org/publications/bookstore-home/product-listing/intellectual-disability-definition-classification-and-systems-of-supports-(11th-edition). 
  66. "Frequently Asked Questions on Intellectual Disability". American Association on Intellectual and Developmental Disabilities (AAIDD). http://aaidd.org/intellectual-disability/definition/faqs-on-intellectual-disability. "The term intellectual disability covers the same population of individuals who were diagnosed previously with mental retardation in number, kind, level, type, duration of disability, and the need of people with this disability for individualized services and supports." 
  67. "mencap". http://www.mencap.org.uk/. Website of the UK's leading learning disability charity, which uses that term throughout. 
  68. "Learning Disabilities: Prevalence". Social Work, Alcohol & Drugs. University of Bedfordshire. http://www.beds.ac.uk/swad/health/learning/prevalence. 
  69. "Special Educational Needs and Disability: A. Cognition and Learning Needs". teachernet. http://www.teachernet.gov.uk/wholeschool/sen/datatypes/Cognitionlearningneeds/. 
  70. Vickerman, Philip (2009-07-08). "Severe Learning Difficulties". Teacher Training Resource Bank. http://www.ttrb3.org.uk/severe-learning-difficulties/. Extensive further references. 
  71. "Draft Illustrative Code of Practice". http://www.rcpsych.ac.uk/PDF/Draft%20Illustrative%20Code%20of%20Practice%20July%202007.pdf. 
  72. Rohrer, Finlo (2008-09-22). "The path from cinema to playground". BBC News. http://news.bbc.co.uk/1/hi/magazine/7629376.stm. 
  73. Beckford, Martin (2010-03-11). "Ofcom says TV channels have 'human right' to broadcast offensive material". Telegraph. https://www.telegraph.co.uk/culture/tvandradio/7415425/Ofcom-says-TV-channels-have-human-right-to-broadcast-offensive-material.html. 
  74. "Australian Psychological Society: Psychologists and intellectual disability". Psychology.org.au. http://www.psychology.org.au/publications/inpsych/disability/. 
  75. "Young people with intellectual disabilities attending mainstream and segregated schooling: perceived stigma, social comparison and future aspirations". Journal of Intellectual Disability Research 50 (Pt 6): 432–44. June 2006. doi:10.1111/j.1365-2788.2006.00789.x. PMID 16672037.  https://dx.doi.org/10.1111%2Fj.1365-2788.2006.00789.x
  76. Centers for Disease Control Prevention (CDC) (January 2004). "Economic costs associated with mental retardation, cerebral palsy, hearing loss, and vision impairment--United States, 2003". MMWR. Morbidity and Mortality Weekly Report 53 (3): 57–9. PMID 14749614.  http://www.ncbi.nlm.nih.gov/pubmed/14749614
  77. Toplak, Jurij (2020-09-07). "Voting is every EU citizen's right, regardless of disability" (in en-GB). https://www.euractiv.com/section/eu-elections-2019/opinion/voting-is-every-eu-citizens-right-regardless-of-disability/. 
  78. "5 reasons why people with intellectual disabilities should get the right to vote" (in en-US). 2019-05-15. http://www.inclusion-europe.eu/why-people-with-intellectual-disabilities-should-get-the-right-to-vote/. 
  79. "Election Access". http://electionaccess.org/en/resources/publications/174/. 
  80. "Health disparities of adults with intellectual disabilities: what do we know? What do we do?". Journal of Applied Research in Intellectual Disabilities 27 (5): 431–46. September 2014. doi:10.1111/jar.12067. PMID 23913632.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4475843
  81. "Discrimination and other barriers to accessing health care: perspectives of patients with mild and moderate intellectual disability and their carers". PLOS ONE 8 (8): e70855. 2013-08-12. doi:10.1371/journal.pone.0070855. PMID 23951026. Bibcode: 2013PLoSO...870855A.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3741324
  82. "Healthcare for persons with intellectual and developmental disability in the community". Frontiers in Public Health 2: 83. 2014-07-15. doi:10.3389/fpubh.2014.00083. PMID 25077139.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4098023
  83. CDC (2019-10-28). "Unrecognized Health Disparity Population | CDC" (in en-us). https://www.cdc.gov/ncbddd/disabilityandhealth/features/unrecognizedpopulation.html. 
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