My son was left handed and has suddenly switched (on his own) to right handed. He is almost 5. I want to stress that there has been NO intrusion by his pre-school educators or myself (I am an elementary educator by happenstance and would never allow this!). Now he is struggling horribly with handwriting and drawing, etc. It is as if he is a two or three year old in development. Fortunately, we can hold him another year before kindergarten. I have made painstaking effort to give him only support and positive reinforcement as he transitions and develops, and made sure that his teachers do the same. His peers are young enough that I don't think they are aware of such things... yet. I am hoping that, perhaps, there might be some people who have some advice for me to help him through this. Writing & drawing seems so hard for him right now (and I know I probably shouldn't worry too much - as he is so young - but I just want to help my son - to make this transition as easy as possible for him!). Does anyone know where I might find research suggesting why switching dominate hands might occur?