my 5 year still reverts to baby talk. It drives me absolutely bonkers!! He has been able to speak well and clear at a very early age and I was even able to recognize at age 2 when he would purposely change his voice to talk this way. I thought that moving out of daycare and into preschool would kick this habit but it hasn't. He does it ALL the time and I don't know how to make him stop. I asked him why he does it and he just says "I don't know". I've thought about just sending him to time out but he would be in there half the day. I think now he's to the point that he just does it without thinking and so I don't know how fair it is to say to him "if i hear any baby talk this week your not going to so and so's birthday party this weekend" But maybe I really do need to be that hard on him.. I would really appreciate any suggestions.