Permanent regression - A common fantasy among adult babies involves a permanent return to a more infantile position. This is a special case of a desire to regress, common among adult babies. This may involve being put back in diapers or returned to the nursery for the rest of their life. These fantasies may be enjoyed even by ABs who are consciously aware that they would not want to give up their adult lives.
Adult Babies and Diaper Girls
Anaclitism - Diaper fetishes are sometimes mentioned as an example of anaclitism, a desire for things one was exposed to in infancy. Anaclitism is a more general term in one way, as the objects don't necessarily have to be infantile, just things that one would have been exposed to during infancy. However, it is more narrow in another way: It implies that the conditions started in infancy. While anaclitism's definition fit into Freud's theories well, it hasn't been developed or supported empirically.