I think that you misunderstand me. In my experience of age role play, a particular event in one's life can trigger the AB need and desire and that event could occur at age 7, 17 or 77 and it is from that age that one is then encouraged or forced to regress to an infant role. For example, a dominant character such as a teacher or work superior could pamper or humiliate a person and make him/her feel like a vulnerable infant and so AB play is a regression from this age. I am an English and drama teacher as well as a nanny and I have experience of a wide variety of role play of many weird and wonderful scenarios.
NannyX