Ok real brisker and smartcookie, I understand the point you may be making, however, I cannot stand those mentalities that say You should not baby sugar your voice when speaking to a baby.
Excuse me, its so normal and natural to talk sweet to a sweet kid. How can you expect to talk to them straight like an adult. That is like ripping them off from the babyhood experience. I am not saying to call a crib a criby and a broit a broity forever, but I mean specifically the intonation of the voice going up and high pitched and gentle like feminine.
Babies need that. I am sure it can be proven.