Students with special educational needs are often at the extremes of the normal left and right brain balance. Students with dyslexia are often very right brained - creative and imaginative, while those with ASD are usually more left brained - preferring facts, logic and order.
If a student is taught using methods that appeal to their preferred learning style(s), they will enjoy their learning more, understand concepts faster and make more effective progress. Of course, students need to be exposed to all styles of learning so that they are still able to access different teaching methods but they will always learn most effectively using their preferred style.