On the other hand, learning disabled children or adults who have problems ENCODING have difficulty putting their ideas into messages they can deliver and that can be understood by other people. In your son's case, this may mean that he has a good idea floating around in his head, but he can't put the ideas into a written story that makes a lot of sense. It may be out of sequence or lack references to cause and effect, or may contain errors about the characters or their deeds. If this is a problem with encoding spoken language, your son may have an idea about what he wants to say, but can't put it into words. He may want to say "spaghetti" but instead he says "busketti." Or he may have just seen a movie and although he enjoyed it, he can't retell the main ideas; he may get them confused. Or in order to get it right he may need to retell the entire story, from beginning to end. This may tire out or turn off listeners who don't understand that he has this kind of disability.
To get a better idea about the specific nature of your son's learning disability, how if affects him in school and at home, and what can be done about it, make sure that he has a comprehensive evaluation by someone who is specifically trained in the assessment and treatment of learning disabilities. This might be a school psychologist, or learning disability specialist, or a neuropsychologist. Your son may need to have an individual educational plan (IEP) in order to get help for this problem. But there is hope. With the right kind and amount of special help, your child can learn to improve his encoding skills.