Here is a topic that unites many of us. A topic we dread.....TOILET TRAINING! At the best of times, with your typically developing children, this can be quite the challenge. When you are trying to teach toileting skills to a child with ASD, there are even greater challenges. Many parents have found that habit training works well. Almost every parent will tell you that keeping track of urine and bowel movements for a week or two, then taking the child at the most likely time elimination is to occur (based on the collected data) is helpful. Reinforcement, including social praise, hugs, tickles, stickers and even edibles have helped many on their way to drier days!
Whatever method you use, remember that consistency and praise are the strongest teaching strategies out there!
Good luck to us all!
Recommended Reading: "Toilet Training for Individuals with Autism and Related Disorders" by Maria Wheeler