Mental Retardation

Table of Contents

Fact Sheet 8 (FS8)
January 2004
Approx. 8 pages when printed.
PDF version


Matthew's Story

Matt is 15 years old. Because Matt has mental retardation, he has been receiving special education services since elementary school. These services have helped him tremendously, because they are designed to fit his special learning needs. Last year he started high school. He, his family, and the school took a good hard look at what he wants to do when secondary school is over. Does he want more education? A job? Does he have the skills he needs to live on his own?

Answering these questions has helped Matt and the school plan for the future. He's always been interested in the outdoors, in plants, and especially in trees. He knows all the tree names and can recognize them by their leaves and bark. So this year he's learning about jobs like forestry, landscaping, and grounds maintenance. Next year he hopes to get a part-time job. He's learning to use public transportation, so he'll be able to get to and from the job. Having mental retardation makes it harder for Matt to learn new things. He needs things to be very concrete. But he's determined. He wants to work outside, maybe in the park service or in a greenhouse, and he's getting ready!




What is Mental Retardation?

Mental retardation is a term used when a person has certain limitations in mental functioning and in skills such as communicating, taking care of him or herself, and social skills. These limitations will cause a child to learn and develop more slowly than a typical child. Children with mental retardation may take longer to learn to speak, walk, and take care of their personal needs such as dressing or eating. They are likely to have trouble learning in school. They will learn, but it will take them longer. There may be some things they cannot learn.




What Causes Mental Retardation?

Doctors have found many causes of mental retardation. The most common are:


Mental retardation is not a disease. You can't catch mental retardation from anyone. Mental retardation is also not a type of mental illness, like depression. There is no cure for mental retardation. However, most children with mental retardation can learn to do many things. It just takes them more time and effort than other children.




How is Mental Retardation Diagnosed?

Mental retardation is diagnosed by looking at two main things. These are:


Intellectual functioning, or IQ, is usually measured by a test called an IQ test. The average score is 100. People scoring below 70 to 75 are thought to have mental retardation. To measure adaptive behavior, professionals look at what a child can do in comparison to other children of his or her age. Certain skills are important to adaptive behavior. These are:


To diagnose mental retardation, professionals look at the person's mental abilities (IQ) and his or her adaptive skills. Both of these are highlighted in the definition of mental retardation provided between the lines below. This definition comes from the Individuals with Disabilities Education Act (IDEA). The IDEA is the federal law that guides how schools provide early intervention and special education and related services to children with disabilities.

Providing services to help individuals with mental retardation has led to a new understanding of how we define mental retardation. After the initial diagnosis of mental retardation is made, we look at a person's strengths and weaknesses. We also look at how much support or help the person needs to get along at home, in school, and in the community. This approach gives a realistic picture of each individual. It also recognizes that the "picture" can change. As the person grows and learns, his or her ability to get along in the world grows as well.



IDEA's Definition of "Mental Retardation"

Our nation's special education law, the IDEA, defines mental retardation as . . .

". . . significantly subaverage general intellectual functioning, existing concurrently with deficits in adaptive behavior and manifested during the developmental period, that adversely affects a child's educational performance." [34 Code of Federal Regulations §300.7(c)(6)]






How Common is Mental Retardation?

As many as 3 out of every 100 people in the country have mental retardation (The Arc, 2001). Nearly 613,000 children ages 6 to 21 have some level of mental retardation and need special education in school (Twenty-fourth Annual Report to Congress, U.S. Department of Education, 2002). In fact, 1 out of every 10 children who need special education has some form of mental retardation.




What Are the Signs of Mental Retardation?

There are many signs of mental retardation. For example, children with mental retardation may:


About 87% of people with mental retardation will only be a little slower than average in learning new information and skills. When they are children, their limitations may not be obvious. They may not even be diagnosed as having mental retardation until they get to school. As they become adults, many people with mild retardation can live independently. Other people may not even consider them as having mental retardation.

The remaining 13% of people with mental retardation score below 50 on IQ tests. These people will have more difficulty in school, at home, and in the community. A person with more severe retardation will need more intensive support his or her entire life. Every child with mental retardation is able to learn, develop, and grow. With help, all children with mental retardation can live a satisfying life.




What About School?

A child with mental retardation can do well in school but is likely to need individualized help. Fortunately, states are responsible for meeting the educational needs of children with disabilities.

For children up to age three, services are provided through an early intervention system. Staff work with the child's family to develop what is known as an Individualized Family Services Plan, or IFSP. The IFSP will describe the child's unique needs. It also describes the services the child will receive to address those needs. The IFSP will emphasize the unique needs of the family, so that parents and other family members will know how to help their young child with mental retardation. Early intervention services may be provided on a sliding-fee basis, meaning that the costs to the family will depend upon their income. In some states, early intervention services may be at no cost to parents.

For eligible school-aged children (including preschoolers), special education and related services are made available through the school system. School staff will work with the child's parents to develop an Individualized Education Program, or IEP. The IEP is similar to an IFSP. It describes the child's unique needs and the services that have been designed to meet those needs. Special education and related services are provided at no cost to parents.

Many children with mental retardation need help with adaptive skills, which are skills needed to live, work, and play in the community. Teachers and parents can help a child work on these skills at both school and home. Some of these skills include:


Supports or changes in the classroom (called adaptations) help most students with mental retardation. Some common changes that help students with mental retardation are listed below under "Tips for Teachers." The resources below also include ways to help children with mental retardation.




Tips for Parents





Tips for Teachers





Resources

American Association on Mental Retardation. (2002). Mental retardation: Definition, classification, and systems of supports (10th ed.). Washington, DC: Author. (See contact information below.)

Baker, B., & Brightman, A. (with Blacher, J., Heifetz, L., Hinshaw, S., & Murphy, D.). (2004). Steps to independence: Teaching everyday skills to children with special needs (4th ed.). Baltimore, MD: Paul H. Brookes. (Telephone: 800.638.3775. Web: www.brookespublishing.com)

Kaufman, S. (1999). Retarded isn’t stupid, Mom! (Rev. ed.). Baltimore, MD: Paul H. Brookes. (See contact information above.)

Trainer, M (1991). Differences in common: Straight talk on mental retardation, Down syndrome, and life. Bethesda, MD: Woodbine House. (Telephone: 800.843.7323. Web: www.woodbinehouse.com)




Organizations

The Arc of the United States
1010 Wayne Avenue, Suite 650
Silver Spring, MD 20910
301.565.3842
Info@thearc.org  E-mail
www.thearc.org  Web
www.TheArcPub.com  Web (Publications)

American Association on Mental Retardation (AAMR)
444 North Capitol Street NW, Suite 846
Washington, DC 20001-1512
202.387.1968; 800.424.3688 (outside DC)
www.aamr.org  Web

Division on Developmental Disabilities
The Council for Exceptional Children
1110 North Glebe Road, Suite 300
Arlington, VA 22201-5704
888.232.7733; 703.620.3660
866.915.5000 TTY
cec@cec.sped.org  E-mail
www.dddcec.org  Web





Publication of this document is made possible through a Cooperative Agreement between the Academy for Educational Development and the Office of Special Education Programs of the U.S. Department of Education. The contents of this document do not necessarily reflect the views or policies of the Department of Education, nor does mention of trade names, commercial products, or organizations imply endorsement by the U.S. Government.