{"formatVersion":"1.1","id":"https://www.mentalhealth.com/library/intellectual-functioning","path":"/library/intellectual-functioning","url":"https://www.mentalhealth.com/library/intellectual-functioning","title":"Intellectual Disabilities (Mental Retardation)","family":"Library detail","description":"Learn about intellectual disabilities, their causes, impact on learning abilities, effects on social and emotional functioning, and challenges in developing practical life skills.","language":"en-US","access":{"audience":"public","indexable":true},"provenance":{"sourceUrl":"https://www.mentalhealth.com/library/intellectual-functioning","wordpressId":"5068","contentCompleteness":"complete","dateScope":"original-source"},"authors":[],"dates":{"datePublished":"2024-05-31T23:31:40Z","dateModified":"2025-11-28T04:53:04Z"},"content":{"html":"<nav aria-label=\"Breadcrumb\" class=\"breadcrumbs\"><ol><li><a href=\"https://www.mentalhealth.com/\">Home</a></li><li><a href=\"https://www.mentalhealth.com/library\">Library</a></li><li><a href=\"https://www.mentalhealth.com/library/medical-conditions\">Medical Conditions</a></li><li><span aria-current=\"page\">Intellectual Disabilities (Mental Retardation)</span></li></ol></nav><div class=\"article-page article-standard\" data-library-standard=\"\"><div class=\"article-main-grid\"><header class=\"article-heading\"><h1>Intellectual Disabilities (Mental Retardation)</h1><div class=\"article-dates\"><span>Published on <time datetime=\"2024-05-31T23:31:40Z\">May 31, 2024</time></span><span aria-hidden=\"true\"> · </span><span>Updated on <time datetime=\"2025-11-28T04:53:04Z\">November 28, 2025</time></span></div></header><div class=\"article-jumpbar\"></div><div class=\"article-layout\"><div class=\"article-reading\"><article class=\"prose\" id=\"article-content\"><p>An <a href=\"https://www.mentalhealth.com/library/intellectual-disabilities\" class=\"article-inline-link\" data-context-link=\"355\">intellectual disability</a> (ID, formerly mental retardation) is a specific type of disability. This disability is caused by significant limitations in intellectual functioning (mental abilities). These limitations make it difficult to acquire important life skills. This is called <a href=\"https://www.mentalhealth.com/library/adaptive-functioning-tests\" class=\"article-inline-link\" data-context-link=\"359\">adaptive functioning</a>.Intellectual functioning is determined by many factors. </p><p>However, a primary source of this capacity is mental ability or \"intelligence.\" Intelligence refers to the ability to reason, plan, think, and communicate. These abilities allow us to solve problems, to learn, and to use good judgment.\n</p><figure class=\"article-feature\"><img alt=\"A woman smiles during a conversation with a counselor.\" decoding=\"async\" height=\"675\" loading=\"eager\" src=\"https://www.mentalhealth.com/assets/optimized/03e36b6f3d1ceedfd1abbc1a.webp\" width=\"1200\" srcset=\"/assets/responsive/9958f9a70a57210f0eecd839.webp 800w, /assets/optimized/03e36b6f3d1ceedfd1abbc1a.webp 1200w\" sizes=\"(max-width: 800px) 100vw, 1200px\"></figure><section aria-labelledby=\"key-takeaways\" class=\"article-takeaways\"><h2 id=\"key-takeaways\">Key takeaways</h2><ul><li>Intellectual functioning includes reasoning, planning, communication, judgment, and the capacity to learn.</li><li>Intellectual disability involves limitations that affect adaptive skills and multiple forms of learning.</li><li>These broader difficulties distinguish intellectual disability from learning disabilities limited to particular academic skills.</li></ul></section><h2 data-editorial-heading=\"\" id=\"measuring-intellectual-functioning\">Measuring intellectual functioning</h2><p>One measure of intelligence is called the <a href=\"https://www.mentalhealth.com/library/psychological-testing-intelligence-quotient\" class=\"article-inline-link\" data-context-link=\"358\">intelligence quotient</a>, or IQ. There are standard tests that measure IQ. When someone's IQ score is below 70, it's likely they will have some problems. Because of how these tests are designed, 97.5% of the population would score above 70. These tests are discussed here.</p><section aria-label=\"Subject matter expert\" class=\"article-expert article-expert-inline\" data-expert-kind=\"related\" data-expert-layout=\"standard\"><p class=\"article-bio-role\">Subject matter expert</p><div class=\"article-expert-identity\"><a href=\"https://www.mentalhealth.com/people/samantha-pieterse\" class=\"card-identity-photo\" aria-label=\"Samantha Pieterse\"><img alt=\"\" height=\"64\" loading=\"lazy\" src=\"https://www.mentalhealth.com/assets/optimized/5fd7230148116777ad30b4dc.jpg\" width=\"64\" decoding=\"async\" srcset=\"/assets/responsive/cfdf9d5273e00cf01f360032.webp 800w, /assets/optimized/5fd7230148116777ad30b4dc.jpg 880w\" sizes=\"(max-width: 800px) 100vw, 880px\"></a><h2><a href=\"https://www.mentalhealth.com/people/samantha-pieterse\">Samantha Pieterse</a></h2></div><p class=\"article-expert-focus\">Psychiatric nursing and mental health care</p><a href=\"https://www.mentalhealth.com/people/samantha-pieterse\" class=\"quiet-button\">View profile</a></section><h2 data-editorial-heading=\"\" id=\"intellectual-disability-and-learning-disabilities\">Intellectual disability and learning disabilities</h2><p>Although ID affects learning abilities, it is not the same as another type of disability called learning disability. Learning disabilities are limited to a specific type of learning. This type is called academic learning. These are the sorts of things taught in schools.</p><p>Therefore, learning disabilities affect reading, writing, and math. In contrast, intellectual disabilities affect three different types of learning. These are academic learning, experiential learning, and social learning. Children with learning disabilities have trouble with one type; academic learning. Children with intellectual disabilities have trouble with all three:</p><h2 data-editorial-heading=\"\" id=\"how-intellectual-functioning-affects-learning\">How intellectual functioning affects learning</h2><p>First, intellectual disabilities affect experiential learning. This type of learning occurs through cause and effect. For example, suppose a child touches a hot stove. This experience causes the child to learn to avoid touching a stove. A child with an ID does not learn from this painful experience. She does not understand the stove (the cause) caused the painful burn (the effect).</p><h3 data-editorial-heading=\"\" id=\"social-learning\">Social learning</h3><p>Second, intellectual disabilities affect social learning. This learning occurs by observing other people in social situations. We learn social customs and rules by watching others. </p><p>For instance, we might notice it is customary to greet people by shaking hands or offering a hug. Social learning enables us to learn social skills. These skills are needed to get along well with other people. Moreover, social skills are critical to life success.</p><h3 data-editorial-heading=\"\" id=\"academic-learning\">Academic learning</h3><p>Third, intellectual disabilities affect academic learning. We learn useful skills and knowledge via formal education. These skills are reading, writing, and math. Thus, learning disabilities differ from ID because learning disabilities are limited to academic skills. In contrast, IDs include many types of learning problems. These learning difficulties make it hard to develop many practical life skills.</p><h2 data-editorial-heading=\"\" id=\"decision-making-and-everyday-functioning\">Decision-making and everyday functioning</h2><p>In addition to learning problems, limited intellectual functioning affects social and emotional functioning. Many persons with ID function on an emotional and social level far below what is average for their age. </p><p>Some people consider this emotional immaturity an endearing quality. The child-like innocence, trust, wonder, and sincerity can be quite charming. However, these very same qualities make people vulnerable to victimization and cruelty.</p><p></p></article><div class=\"article-endmatter\"><section class=\"article-about article-panel\"><h2 id=\"about-mentalhealth-com\">About MentalHealth.com</h2><p>MentalHealth.com helps people understand themselves, build healthier relationships, and access the right care. We bring together mental health education, diagnostics, and care management to support well-being throughout every phase of life.</p><div class=\"article-contributors\"></div></section><section aria-label=\"Related community\" class=\"article-topic-community article-topic-community-end\"><a href=\"https://www.mentalhealth.com/community/lifespan-development\" class=\"card-identity-photo\" aria-label=\"Lifespan Development\"><img alt=\"\" class=\"topic-community-banner\" height=\"800\" loading=\"lazy\" src=\"https://www.mentalhealth.com/assets/optimized/aed067348fad97b16c048a3a.webp\" width=\"1149\" decoding=\"async\" srcset=\"/assets/responsive/9f21361444628d9bdecbd723.webp 800w, /assets/optimized/aed067348fad97b16c048a3a.webp 1149w\" sizes=\"(min-width: 961px) 236px, calc(100vw - 80px)\"></a><p class=\"topic-community-label\">Related community</p><h2><a href=\"https://www.mentalhealth.com/community/lifespan-development\">Lifespan Development</a></h2><p>Explore growth, transitions, and mental health through the different stages of life.</p></section></div></div><aside aria-label=\"Article navigation and related information\" class=\"article-sidebar\" data-bounded-rail=\"\" tabindex=\"0\"><details class=\"article-contents\" data-expanded=\"false\" data-scrolled-past=\"false\" data-section-preview=\"3\" open=\"\"><summary><strong>Table of contents</strong><span aria-hidden=\"true\"></span><small data-current-section=\"\">Choose a section</small></summary><nav aria-label=\"Article contents\"><ol id=\"article-section-list\"><li><a aria-label=\"Measuring intellectual functioning\" href=\"https://www.mentalhealth.com/library/intellectual-functioning#measuring-intellectual-functioning\" title=\"Measuring intellectual functioning\">Measuring intellectual functioning</a></li><li><a aria-label=\"Intellectual disability and learning disabilities\" href=\"https://www.mentalhealth.com/library/intellectual-functioning#intellectual-disability-and-learning-disabilities\" title=\"Intellectual disability and learning disabilities\">Intellectual disability and learning disabilities</a></li><li><a aria-label=\"How intellectual functioning affects learning\" href=\"https://www.mentalhealth.com/library/intellectual-functioning#how-intellectual-functioning-affects-learning\" title=\"How intellectual functioning affects learning\">How intellectual functioning affects learning</a></li><li><a aria-label=\"Decision-making and everyday functioning\" href=\"https://www.mentalhealth.com/library/intellectual-functioning#decision-making-and-everyday-functioning\" title=\"Decision-making and everyday functioning\">Decision-making and everyday functioning</a></li></ol><button aria-controls=\"article-section-list\" aria-expanded=\"false\" class=\"article-sections-toggle\" data-sections-toggle=\"\" type=\"button\">View more</button></nav></details></aside></div></div></div>","text":"Home Library Medical Conditions Intellectual Disabilities (Mental Retardation) Intellectual Disabilities (Mental Retardation) Published on May 31, 2024 · Updated on November 28, 2025 An intellectual disability (ID, formerly mental retardation) is a specific type of disability. This disability is caused by significant limitations in intellectual functioning (mental abilities). These limitations make it difficult to acquire important life skills. This is called adaptive functioning.Intellectual functioning is determined by many factors. However, a primary source of this capacity is mental ability or \"intelligence.\" Intelligence refers to the ability to reason, plan, think, and communicate. These abilities allow us to solve problems, to learn, and to use good judgment. Key takeaways Intellectual functioning includes reasoning, planning, communication, judgment, and the capacity to learn. Intellectual disability involves limitations that affect adaptive skills and multiple forms of learning. These broader difficulties distinguish intellectual disability from learning disabilities limited to particular academic skills. Measuring intellectual functioning One measure of intelligence is called the intelligence quotient, or IQ. There are standard tests that measure IQ. When someone's IQ score is below 70, it's likely they will have some problems. Because of how these tests are designed, 97.5% of the population would score above 70. These tests are discussed here. Subject matter expert Samantha Pieterse Psychiatric nursing and mental health care View profile Intellectual disability and learning disabilities Although ID affects learning abilities, it is not the same as another type of disability called learning disability. Learning disabilities are limited to a specific type of learning. This type is called academic learning. These are the sorts of things taught in schools. Therefore, learning disabilities affect reading, writing, and math. In contrast, intellectual disabilities affect three different types of learning. These are academic learning, experiential learning, and social learning. Children with learning disabilities have trouble with one type; academic learning. Children with intellectual disabilities have trouble with all three: How intellectual functioning affects learning First, intellectual disabilities affect experiential learning. This type of learning occurs through cause and effect. For example, suppose a child touches a hot stove. This experience causes the child to learn to avoid touching a stove. A child with an ID does not learn from this painful experience. She does not understand the stove (the cause) caused the painful burn (the effect). Social learning Second, intellectual disabilities affect social learning. This learning occurs by observing other people in social situations. We learn social customs and rules by watching others. For instance, we might notice it is customary to greet people by shaking hands or offering a hug. Social learning enables us to learn social skills. These skills are needed to get along well with other people. Moreover, social skills are critical to life success. Academic learning Third, intellectual disabilities affect academic learning. We learn useful skills and knowledge via formal education. These skills are reading, writing, and math. Thus, learning disabilities differ from ID because learning disabilities are limited to academic skills. In contrast, IDs include many types of learning problems. These learning difficulties make it hard to develop many practical life skills. Decision-making and everyday functioning In addition to learning problems, limited intellectual functioning affects social and emotional functioning. Many persons with ID function on an emotional and social level far below what is average for their age. Some people consider this emotional immaturity an endearing quality. The child-like innocence, trust, wonder, and sincerity can be quite charming. However, these very same qualities make people vulnerable to victimization and cruelty. About MentalHealth.com MentalHealth.com helps people understand themselves, build healthier relationships, and access the right care. We bring together mental health education, diagnostics, and care management to support well-being throughout every phase of life. Related community Lifespan Development Explore growth, transitions, and mental health through the different stages of life. Table of contentsChoose a section Measuring intellectual functioning Intellectual disability and learning disabilities How intellectual functioning affects learning Decision-making and everyday functioning View 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