The DSM-IV classifies mental retardation into four stages based on severity: mild (IQ score of 50-55 to approximately 70), moderate (
IQ score of 30-35 to 50-55
), severe (IQ score of 20-25 to 35-40), and profound (IQ score of less than 20-25).
What causes moderate mental retardation?
trauma before birth
, such as an infection or exposure to alcohol, drugs, or other toxins. trauma during birth, such as oxygen deprivation or premature delivery. inherited disorders, such as phenylketonuria (PKU) or Tay-Sachs disease. chromosome abnormalities, such as Down syndrome.
What are the characteristics of moderate mental retardation?
| Mild retardation Moderate retardation | Function at one half to two thirds of CA (IQ: 50 to 70) Function at one third to one half of CA (IQ: 35 to 49) | Slow in all areas Noticeable delays, especially in speech |
|---|
What are the three levels of retardation?
The condition is further divided into four levels of retardation based on IQ, which include mild mental retardation (IQ between 50-55 and 70), moderate mental retardation (IQ between 35-40 and 50-55),
severe mental retardation
(IQ between 20-25 and 35-40), and profound mental retardation (IQ below 20 or 25) (American …
What is severe mental retardation?
Severe mental retardation is defined by
a tested IQ of between 20 to 25 and 35 to 40
. ○ Profound mental retardation is defined by a tested IQ of less than 20 to 25. • Approximately 70% of cases of severe to profound mental retardation have a known cause.
How do you identify an intellectual disability?
- sit up, crawl, or walk later than other children.
- learn to talk later, or have trouble speaking.
- find it hard to remember things.
- have trouble understanding social rules.
- have trouble seeing the results of their actions.
- have trouble solving problems.
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 disability
3
.
Can mental retardation be treated?
A small study of 30 people with the most common inherited form of mental retardation has found encouraging evidence that
some symptoms of the disorder can be alleviated with drugs
.
What is the main cause of mental retardation?
Causes of mental retardation include
fetal alcohol syndrome and fetal alcohol effect
; brain damage caused by the use of prescription or illegal drugs during pregnancy; brain injury and disease; and genetic disorders, such as Down syndrome and fragile X syndrome.
How can we prevent mental retardation?
Prenatal diagnosis, newborn screening, dietary supplementation or restriction, hormone replacement, vaccination
, and immunotherapy are just some of the techniques that have been applied to prevent mental retardation.
What are the 4 degrees of mental retardation?
The DSM-IV classifies mental retardation into four stages based on severity:
mild (IQ score of 50-55 to approximately 70)
, moderate (IQ score of 30-35 to 50-55), severe (IQ score of 20-25 to 35-40), and profound (IQ score of less than 20-25).
What is the IQ formula?
Intelligence quotient (IQ) can be obtained by the equation
MA/CA=IQ
, where MA is mental age and CA is chronological age. … Intelligence is defined as what the intelligence test measures.
Is ADHD a form of retardation?
Hyperactivity syndromes and disorders (ADHD and HKD) include the symptoms of overactivity, inattention, and impulsivity, which occur in many other mental disorders as well, including
mental retardation
(MR). It is not surprising that symptoms of ADHD occur significantly higher in children with learning disabilities.
What is the difference between mental retardation and intellectual disability?
In the U.S. these terms have very different meanings. An
intellectual disability describes below-average IQ and a lack of skills needed for daily living
. This condition used to be called “mental retardation.” A learning disability refers to weaknesses in certain academic skills.
What is the life expectancy of someone with mental retardation?
Results. Kaplan-Meier survival plots showed a strong negative association between severity of intellectual disability and survival, with median life expectancies of
74.0, 67.6, and 58.6 years
for people with mild, moderate, and severe lev- els of handicap.
Does mental retardation get worse with age?
What mental changes occur, as adults with mental- retardation grow older? Like the general population after age 50, people with mental retardation, who do not have Down syndrome, experience a
gradual decline in overall intellectual capacity
, a decrease in their speed of recall, and slower general cognitive functioning.
