Learning Disorders


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Learning Disorders

 

Definition

Learning disorders are academic difficulties experienced by children and adults of average to above-average intelligence. People with learning disorders have difficulty with reading, writing, mathematics, or a combination of the three. These difficulties significantly interfere with academic achievement or daily living.

Description

Learning disorders, or disabilities, affect approximately 2 million children between the ages of six and 17 (5% of public school children), although some experts think the figure may be as high as 15%. These children have specific impairments in acquiring, retaining, and processing information. Standardized tests place them well below their IQ range in their area of difficulty. The three main types of learning disorders are reading disorders, mathematics disorders, and disorders of written expression. The male: female ratio for learning disorders is about 5:1.

Reading disorders

Reading disorders are the most common type of learning disorder. Children with reading disorders have difficulty recognizing and interpreting letters and words (dyslexia). They aren't able to recognize and decode the sounds and syllables (phonetic structure) behind written words and language in general. This condition lowers accuracy and comprehension in reading.

Mathematics disorders

Children with mathematics disorders (dyscalculia) have problems recognizing and counting numbers correctly. They have difficulty using numbers in everyday settings. Mathematics disorders are typically diagnosed in the first few years of elementary school when formal teaching of numbers and basic math concepts begins. Children with mathematics disorders usually have a co-existing reading disorder, a disorder of written expression, or both.

Disorders of written expression

Disorders of written expression typically occur in combination with reading disorders or mathematics disorders or both. The condition is characterized by difficulty with written compositions (dysgraphia). Children with this type of learning disorder have problems with spelling, punctuation, grammar, and organizing their thoughts in writing.

Causes and symptoms

Learning disorders are thought to be caused by neurological abnormalities that trigger impairments in the regions of the brain that control visual and language processing and attention and planning. These traits may be genetically linked. Children from families with a history of learning disorders are more likely to develop disorders themselves. In 2003 a team of Finnish researchers reported finding a candidate gene for developmental dyslexia on human chromosome 15q21.
Learning difficulties may also be caused by such medical conditions as a traumatic brain injury or brain infections such as encephalitis or meningitis.
The defining symptom of a learning disorder is academic performance that is markedly below a child's age and grade capabilities and measured IQ. Children with a reading disorder may confuse or transpose words or letters and omit or add syllables to words. The written homework of children with disorders of written expression is filled with grammatical, spelling, punctuation, and organizational errors. The child's handwriting is often extremely poor. Children with mathematical disorders are often unable to count in the correct sequence, to name numbers, and to understand numerical concepts.

Diagnosis

Problems with vision or hearing, mental disorders (depression, attention-deficit/hyperactivity disorder), mental retardation, cultural and language differences, and inadequate teaching may be mistaken for learning disorders or complicate a diagnosis. A comprehensive medical, psychological, and educational assessment is critical to making a clear and correct diagnosis.
A child thought to have a learning disorder should undergo a complete medical examination to rule out an organic cause. If none is found, a psychoeducational assessment should be performed by a psychologist, psychiatrist, neurologist, neuropsychologist, or learning specialist. A complete medical, family, social, and educational history is compiled from existing medical and school records and from interviews with the child and the child's parents and teachers. A series of written and verbal tests are then given to the child to evaluate his or her cognitive and intellectual functioning. Commonly used tests include the Wechsler Intelligence Scale for Children (WISC-III), the Woodcock-Johnson Psychoeducational Battery, the Peabody Individual Achievement Test-Revised (PIAT-R) and the California Verbal Learning Test (CVLT). Federal legislation mandates that this testing is free of charge within the public school system.

Key terms

Dyslexia — An inability to read, write, or spell words in spite of the ability to see and recognize letters. Dyslexia is an autosomal dominant disorder thst occurs more frequently in males.
IQ — Intelligence quotient; a measure of intellectual functioning determined by performance on standardized intelligence tests.
Phonics — A system to teach reading by teaching the speech sounds associated with single letters, letter combinations, and syllables.

Treatment

Once a learning disorder has been diagnosed, an individual education plan (IEP) is developed for the child in question. IEPs are based on psychoeducational test findings. They provide for annual retesting to measure a child's progress. Learning-disordered students may receive special instruction within a regular general education class or they may be taught in a special education or learning center for a portion of the day.
Common strategies for the treatment of reading disorders focus first on improving a child's recognition of the sounds of letters and language through phonics training. Later strategies focus on comprehension, retention, and study skills. Students with disorders of written expression are often encouraged to keep journals and to write with a computer keyboard instead of a pencil. Instruction for students with mathematical disorders emphasizes real-world uses of arithmetic, such as balancing a checkbook or comparing prices.

Prognosis

Resources

Books

American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders. 4th ed., revised. Washington, DC: American Psychiatric Association, 2000.
Beers, Mark H., MD, and Robert Berkow, MD., editors. "Learning Disorders." In The Merck Manual of Diagnosis and Therapy. Whitehouse Station, NJ: Merck Research Laboratories, 2004.

Periodicals

Galaburda, D. M., and B. C. Duchaine. "Developmental Disorders of Vision." Neurologic Clinics 21 (August 2003): 687-707.
Gillberg, C., and H. Soderstrom. "Learning Disability." Lancet 362 (September 6, 2003): 811-821.
Taipale, M., N. Kaminen, J. Nopola-Hemmi, et al. "A Candidate Gene for Developmental Dyslexia Encodes a Nuclear Tetratricopeptide Repeat Domain Protein Dynamically Regulated in Brain." Proceedings of the National Academy of Sciences in the USA 100 (September 30, 2003): 11553-11558.
Taylor, K. E., and J. Walter. "Occupation Choices of Adults With and Without Symptoms of Dyslexia." Dyslexia 9 (August 2003): 177-185.
Witt, W. P., A. W. Riley, and M. J. Coiro. "Childhood Functional Status, Family Stressors, and Psychosocial Adjustment Among School-Aged Children with Disabilities in the United States." Archives of Pediatric and Adolescent Medicine 157 (July 2003): 687-695.

Organizations

The Interactive Guide to Learning Disabilities for Parents, Teachers, and Children. http://www.ldonline.org.
Learning Disabilities Association of America. 4156 Library Road, Pittsburg, PA 15234. (412) 341-1515. http://www.ldanatl.org.
National Center for Learning Disabilities (NCLD). 381 Park Avenue South, Suite 1401, New York, NY 10016. (410) 296-0232. http://www.ncld.org.

Other

LD Online Page. http://www.ldonline.org.

learning

 [lern´ing] (pl. learn·ing)
education (def. 2).
the acquisition of knowledge.
learning disorders a group of disorders characterized by academic functioning that is substantially below the level expected on the basis of the patient's chronological age, measured intelligence, and age-appropriate education.
lifelong learning the continuation of the process of education throughout life.
References in periodicals archive ?
They are able to provide special attention to dyslexic pupils, helping them to compensate for or cope with their learning disorder.
As soon as you are aware of some of the most common signs of learning disorders you will be able to catch the problem early and focus on how best to support your child.
Learning disorders (LD) or Dyslexia is a term that denotes a single, but heterogeneous group of disorders.
The introductory chapters also make it easy to identify particular topics within each section, which is helpful to theorists and researchers looking for a more complete understanding of all factors contributing to learning disorders.
Repetitive pain in premature babies has been associated with attention deficit disorder, learning disorders and behavioural problems in later life.
TSRHC is one of the nation's leading pediatric centers for the treatment of orthopedic conditions, certain related neurological disorders and learning disorders, such as dyslexia.
Although emotional problems caused by environmental deprivation are generally regarded as secondary complications for other learning disorders (Broman, Bien & Shaughnessy, 1985), their effects on the development, sustainability, and treatment of dyscalculia have recently gained reconsideration as a potential primary cause (Shalev & Gross-Tsur, 2001).
Headache and migraine prevalence were associated with anemia, attention-deficit disorder, learning disorders, and overweight status, she said.
Three of the five children have been diagnosed with learning disorders.
Parents' Guide To IQ Testing and Gifted Education has advice for parents of exceptionally gifted children, parents of children who are so bored with the normal school curriculum they are inclined to "coast" on their gifts, parents of gifted children with learning disorders, and parents seeking to learn more about IQ tests in America, how they are administered, how their results are used, and what they really reveal.
Enhanced with a glossary, references and resources, Smart Kids With Learning Difficulties is very strongly recommended for parents and teachers of children with variable learning disorders for its concise and thorough documentation and "reader friendly" text.

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