What is the connection between mental retardation and IQ?

Mental retardation and IQ are interconnected because it is necessary to have a below average intelligence quotient (IQ) for diagnosis. Together with low IQ, the diagnosis of mental retardation (MR) includes reduced ability to function in the world and the onset of symptoms before age 18 years. Patients can be grouped into different MR classes based on their IQ score. A number of standardized tests can be used to determine IQ.

The diagnosis of mental retardation requires compliance with three different criteria. First, the onset of symptoms of impaired cognitive functioning must develop before age 18 years. The second requirement is that patients should have restrictions in their ability to live a normal everyday life. They will have reduced adaptive behavior and will have difficulty taking care of themselves and functioning in society. The final criterion for the diagnosis of mental retardation is that patients have below average intellectual function; Often the IQ score less or equal to 70 is used as a boundary point. Often they are not diagnosed this condition until they start school andThey are obliged to perform higher -level intellectual tasks. In teaching, these patients are often able to achieve knowledge and abilities, which are usually associated with a primary school student at a US -class level of three to six. They can often live alone and make money by making simple jobs.

Mental retardation and IQ score of approximately 35-50 puts patients to the extent of mild severity. These patients often benefit from life in group houses or with carers. Simple skills such as self -care and observing their personal security often learn successfully.

severe mental retardation, including patients with joke IQ scores ranging from 20-35, often prevents patients from functioning in themselves. Although some with heavy MR can learn basic skills such as washing or feeding themselves, most will require long -term supportive care. Usually develop limited abilitiesFor communication with the world around them either by verbal means or sign language.

patients with mental retardation and IQ score less than 20 fall into the category of deep MR. They cannot take care of themselves and always need narrow supervision. These patients are often identified very soon in their lives. Fortunately, only about 10% of all mental retardation patients fall into the deep grade class.

Determination of whether the individual has below average intelligence is often performed by testing IQ. Standardized tests, such as Stanford-Binet Intelligence Scale®, Weschler Intelligence Scales for Children® and Kaufman's Battery Evaluation Provisions Provides numeric values ​​for intelligence quote. Usually the IQ scale is set so that a person with average intelligence gets a score of 100, with a standard deviation set to 15 points. A patient who score 70 is therefore two standard deviations below the diameter and is therefore less intelligent than approximately 98% of its peers.