intellectual functioning

{{short description|Mental Function}}

Intellectual functioning refers to the "general mental ability that includes reasoning, planning, problem solving, abstract thinking, comprehending complex ideas, learning quickly and learning from experience". Significantly limited or impaired intellectual functioning characterizes intellectual disabilities.American Association on Intellectual and Developmental Disabilities (AAIDD) Manual on Definition, Classification and Support Systems in Mental Retardation (Schalock et al., 2010){{Cite news|url=https://www.apa.org/pi/disability/resources/publications/newsletter/2016/09/intellectual-disability-support|title=Intellectual disability and support needs|last1=Wehmeyer|first1=Michael L.|date=September 2016|work=American Association on Intellectual and Developmental Disabilities|last2=Thompson|first2=James R.}}

Ageing has been shown to cause a decline in intellectual functioning.{{Cite journal|last1=Schaie|first1=K. Warner|last2=Willis|first2=Sherry L.|date=1986|title=Can Decline in Adult Intellectual Functioning be Reversed?|url=https://www.researchgate.net/publication/232458770|journal=Developmental Psychology|volume=22|issue=2|pages=223–232|doi=10.1037/0012-1649.22.2.223}}