intellectual disability
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What is an intellectual disability?
Intellectual disability is characterized by the incomplete development of general mental capacity, which causes delays in motor, social, and language skills. It is commonly identified through standardized intelligence tests, with an intelligence quotient (IQ) of 70 or below typically requiring special care and training.
Causes can include genetic disorders, infectious diseases, metabolic disorders, physical malformations, poisoning, head injuries, and malnutrition. Management involves specialists such as pediatricians, geneticists, psychologists, audiologists, speech pathologists, and special educators, who provide comprehensive training programs tailored to individual capabilities. With appropriate support, many intellectually disabled individuals can become productive and nearly independent members of society.
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How is an intellectual disability different from a learning disability?
Intellectual disability is characterized by impaired adaptive behavior and subnormal intellectual functioning, which are typically identified during developmental years. An IQ test result of 70 or lower is an indicator of intellectual disability.
Learning disabilities are chronic difficulties with reading, writing, spelling, or calculating, and are believed to have a neurological origin. Unlike intellectual disabilities, learning disabilities do not indicate subnormal intelligence.
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What are some signs or characteristics of intellectual disability?
Intellectual disability involves impaired adaptive behavior and subnormal intellectual functioning that are typically identified during developmental years. It is often identified through standardized intelligence tests, with an intelligence quotient (IQ) of 70 or below indicating the need for specialized care and training.
Other characteristics include delays in the development of motor, language, and social skills, as well as impaired emotional control and behavioral abnormalities. Individuals with intellectual disabilities are classified into categories based on their IQ scores and adaptive functioning, such as the ability to learn and perform daily living skills.
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What can cause intellectual disabilities?
Intellectual disability can stem from various factors occurring before, during, or after birth. These include genetic disorders like Down syndrome, infectious diseases such as meningitis, and metabolic disorders. Physical malformations, exposure to toxins like lead or radiation, head injuries, and malnutrition can also lead to intellectual disability. In some milder cases, economic and environmental deprivation during early childhood may be a factor.
Intellectual disability is characterized by the incomplete development of mental capacity, which causes delays in motor, language, and social skills. Behavioral abnormalities and impaired emotional control are also common symptoms.
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How do schools or communities help people with intellectual disabilities?
Schools and communities offer various forms of assistance to individuals with intellectual disabilities. Special education programs in schools provide tailored instruction, and mainstreaming integrates special education students into regular classes to promote normal school routines. For older individuals with intellectual disabilities, regular workshops and physical education classes can help prepare them for broader society. Communities may offer vocational training, sheltered workshops, and residential care facilities that resemble family life, which is often essential for those with severe intellectual disabilities or senior individuals who require constant attention. Special techniques, such as visual methods for the deaf and Braille for the blind, are used to teach reading through alternative sense modalities. Psychotherapy, behavior therapy, and clinical services can be integrated into educational programs to address social and emotional challenges.
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What are some ways society can support individuals with intellectual disabilities to live independently?
Society can support individuals with intellectual disabilities in achieving greater independence through various means. These include specialized training, continuing guidance, and creating opportunities for community-based rehabilitation. Supported employment programs can help people with disabilities find jobs in traditional work environments, promoting a more integrated life. Assistive technology can also enable individuals to perform activities independently, enhancing their quality of life and reducing the need for constant assistance. Additionally, the Americans with Disabilities Act (ADA) extends civil rights protections to individuals with disabilities, ensuring equal opportunities in public accommodations, employment, and transportation. Facilitating real-life interactions between disabled and nondisabled individuals can lower stigma and build positive relationships.
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any of several conditions characterized by subnormal intellectual functioning and impaired adaptive behavior that are identified during an individualās developmental years.
Characterization
Intellectual disability is commonly identified through standardized intelligence tests, a tested intelligence quotient (IQ) of 70 being the usual upper borderline for those needing special care and training. It is classified according to categories that take into account an individualās physical and social development. These categories correspond roughly to IQ scores. Those who have scores in the upper range of intellectual disability, roughly 53 to 70, comprise the majority of intellectually disabled persons; they are able to learn academic and prevocational skills with some special training. Those in the moderate range, roughly 36 to 52, are able to talk and care for their own basic needs, to learn functional academic skills, and to undertake semiskilled work under sheltered conditions. Those in the severe range, about 21 to 35, show slow motor development, limited communication skills, and possible physical handicaps but have the ability to talk and care for their basic needs, as well as to contribute to their own maintenance with supervision in work and living situations. Finally, those in the profound range, comprising the smallest number of intellectually disabled, demonstrate minimal responsiveness, secondary physical handicaps, poor motor development and communication skills, and the ability to perform only highly structured work activities. Institutionalization in this case is almost inevitable. Educators have coordinated IQ scores with potential learning capabilities: educable, 50ā75; trainable, 25ā50; and custodial, 0ā25.
Causes
Moderate to severe intellectual disability can be caused by a number of mishaps that may occur before, during, or after birth, including: genetic disorders, such as Down syndrome (leading to cretinism, for example); infectious diseases, such as meningitis; metabolic disorders; physical malformations; poisoning from radiation, lead, or other toxic agents; injuries to the head; and malnutrition. Milder cases of progressive intellectual disability can sometimes be traced to economic and environmental deprivation early in childhoodāconditions that are associated with poverty or famine.
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Care and education
In the past, care and treatment of intellectually disabled persons was mainly custodial. More recently, however, efforts have been directed toward improved medical treatment of organic conditions, parent education, special schooling, vocational training, and sheltered workshops. Many intellectually disabled persons are capable of becoming productive and nearly independent members of society, although in most cases specialized training and continuing guidance are necessary.
Residential care is often a necessity for the more severely intellectually disabled (who need constant attention) as well as for senior intellectually disabled persons. Psychologists believe the best kind of residential care is that which most closely resembles family life. Residential care facilities and group homes are typically located in apartments or individual houses.
For many school-age children, special education is one of the most important keys to self-sufficiency. Mainstreamingāthe integration of children from special education classes with those in the regular programāis an attempt to acquaint intellectually disabled children with normal school routines, an often laudable goal which can nevertheless create daunting educational challenges for teachers as well as for intellectually disabled and nonintellectually disabled children alike. Moreover, physical integration alone does not guarantee acceptance by peers. Social and psychological integration must also be considered.