What percent of the population is affected with intellectual disabilities?

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

How many people have intellectual and developmental disabilities in the US?

How many people with intellectual or developmental disabilities live in the United States? There were 7.4 million people with an intellectual or developmental disability in the United States in 2017. Of those, 20% or 1.5 million people were known to their state developmental disabilities agency.

How many people have profound intellectual disability?

Approximately 1% of persons with ID have profound ID and recognized by 2 years of age (8,13,15,16). A profound ID is characterized by intellectual and adaptive functioning that are approximately four of more standard deviations below the mean (approximately less than the 0.003rd percentile) (10).

How many children in the US have an intellectual disability?

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 is the IQ of a person with an intellectual disability?

A person is considered intellectually disabled if they have an IQ of less than 70 to 75.

What is the most common cause of intellectual disability?

Some of the most common known causes of intellectual disability include fetal alcohol syndrome; genetic and chromosomal conditions, such as Down syndrome and fragile X syndrome; and certain infections during pregnancy. Children who have a sibling with autism are at a higher risk of also having autism spectrum disorder.

Can you have a low IQ and still be smart?

They can, but it’s not just that. It’s that IQ is a very noisy measure of all intellectual talents averaged together, and some people with unimpressive general IQs can still be extremely talented in particular fields. Even such a stereotypically intellectual pursuit as chess only correlates with IQ at 0.24.