Approximately 1 – 3 percent of the global population has an intellectual disability—as many as 200 million people. Intellectual disability is significantly more common in low-income countries—16.41 in every 1,000 people. Disabilities overall are more common in low-income countries.

What percent of the population has an intellectual disability?

Intellectual disability affects about 1% of the population, and of those about 85% have mild intellectual disability. Males are more likely than females to be diagnosed with intellectual disability.

How many children have IDD?

Intellectual Disability (ID) (formerly called mental retardation) is the most common developmental disability–nearly 6.5 million people in the United States have some level of ID. (more than 545,000 are ages 6-21).

What factors influence the prevalence of intellectual disabilities?

Changes or differences in population characteristics, including the average parental age, socioeconomic status, and sex ratios, can influence the prevalence and incidence of intellectual disabilities.

Who defines intellectual disability?

Intellectual disability means a significantly reduced ability to understand new or complex information and to learn and apply new skills (impaired intelligence). This results in a reduced ability to cope independently (impaired social functioning), and begins before adulthood, with a lasting effect on development.

Intellectual Disability

25 related questions found

What is the most common cause of intellectual disability?

Some of the most common known causes of intellectual disability include fetal alcohol syndrome disorder; genetic and chromosomal conditions, such as Down syndrome and fragile X syndrome; and certain infections during pregnancy.

What is the most common intellectual disability?

Fragile X syndrome is the most common known cause of an inherited intellectual disability worldwide. It is a genetic condition caused by a mutation (a change in the DNA structure) in the X chromosome.

What are comorbidities of intellectual disability?

When specific ID diagnostic criteria are used (diagnostic criteria for psychiatric disorders for use with adults with learning disabilities [DC-LD]), the most common comorbid psychiatric disorders are problem behavior (18.7%), affective disorder (5.7%), autism spectrum disorder (4.4%), psychotic disorder (3.8%), and ...

What percentage of children have intellectual disability?

The prevalence of intellectual disability was lower among younger children than older children: 0.73% among children aged 3–7 years, 1.45% among children aged 8–12 years, and 1.40% among children aged 13–17 years.

Is Autism considered an intellectual disability?

About 1% of the general population is thought to have intellectual disability, and about 10% of individuals with intellectual disability have Autism Spectrum Disorder (ASD) or autistic traits. However, a much higher percentage of individuals with ASD have intellectual disability³.

Are disabilities becoming more common?

The most common disability type, mobility, affects 1 in 7 adults. With age, disability becomes more common, affecting about 2 in 5 adults age 65 and older. “At some point in their lives, most people will either have a disability or know someone who has a one,” said Coleen Boyle, Ph.

How many people in the US have a cognitive disability?

More than 16 million people in the United States are living with cognitive impairment,1 but the impact of cognitive impairment at the state level is not well understood.

What is the politically correct term for mentally disabled?

Term no longer in use: mental handicap. Term Now Used: intellectual disability. Term no longer in use: mentally handicapped. Term Now Used: intellectually disabled.

What is the prevalence of developmental delay?

About one in six children in the U.S. have one or more developmental disabilities or other developmental delays.

What percentage of the US population is affected by mental retardation?

Prevalence. Mental retardation is present in about 2 to 3 percent of the population. It can be defined as cognitive ability that is markedly below average level and a decreased ability to adapt to one's environment. The onset of the condition occurs during the developmental period, i.e., gestation through age 18 years.

What percentage of the population has a moderate level intellectual disability?

Individuals with mild disability represent the largest proportion (approximately 2.5% of the whole population); moderate intellectual disability involves approximately 0.4% of the population, and severe and profound levels combined account for approximately 0.1% (see also Cooke 2003).

Is mental retardation a comorbidity?

Results confirm that comorbidity is a factor differentiating among mentally retarded subjects. Both verbal processes requiring memory retrieval and visuo-spatial processes are involved as differentiating features.

What is a comorbid disability?

Comorbidity refers to the clustering of mental disorders in certain individuals over time. That is, it refers to a history of disorders in the past as well as to the concurrence of disorders in the present (see Wittchen, 1996).

Is ADHD considered an intellectual or developmental disability?

Along with autism, cerebral palsy, hearing loss, intellectual disabilities, learning disabilities, vision impairment and others, ADHD is also considered a developmental disability.

What is the difference between cognitive and intellectual disability?

A cognitive impairment (also known as an intellectual disability) is a term used when a person has certain limitations in mental functioning and in skills such as communication, self-help, and social skills.

What are the four categories of intellectual disability?

There are four levels of ID:

• mild.
• moderate.
• severe.
• profound.

What is the most common preventable cause of intellectual disability in the United States?

intellectual disability. Problems during pregnancy - Use of alcohol or drugs by the pregnant mother can cause intellectual dis- ability. In fact, alcohol is known to be the leading preventable cause of intellectual disability.

What causes intellectual disability is 100 percent preventable?

The leading causes are Autism, Down syndrome, Fragile X syndrome, and fetal alcohol syndrome or FAS. Among these, the only preventable cause is fetal alcohol syndrome. Medical conditions that lead to intellectual disabilities fall into three groups.

What are four common causes of intellectual disability?

Some of the most common known causes of intellectual disability – like Down syndrome, fetal alcohol syndrome, fragile X syndrome, genetic conditions, birth defects, and infections – happen before birth. Others happen while a baby is being born or soon after birth.

Who are persons with disabilities?

"Person with disability" means a person with long term physical, mental, intellectual or sensory impairment which, in interaction with barriers, hinders his full and effective participation in society equally with others.