Parents are often worried and disappointed when their child has problems learning in school.
Yet despite this effort he or she is not mastering school tasks and falls behind. Some learning disabled children also have trouble sitting still or paying attention. Learning disabilities affect as many as 15 percent of otherwise able schoolchildren. It is believed that learning disabilities are caused by a difficulty with the nervous system that affects receiving, processing, or communicating information. Some learning disabled children are also hyperactive, easily distracted, and have a short attention span.