I should probably know this from the various development classes I've taken but I'm drawing a blank. I was just thinking about this because I was watching my 4 month old nephew yesterday and I swear I kept hearing him attempt to say "hello" a few times. But I feel like I may have been just imagining it.
Most Helpful Guy
I think typical is about a year but I know for some it's much longer. 4 months would seem to be really early. At that age I think babies mostly just mumble or babble stuff maybe you're interpreting it as hello when he has no idea what he's saying? Or maybe he's a super-genius haha1
Most Helpful Girl
Around 8 months, maybe a tad earlier (and even later). All babies develop things quicker then other babies. Some may catch onto it a bit later. I think the average would be around 8 months and that would be just one word (eg. No, bye, mummy, daddy, yes) things like that. Leading up to the 8 months, Some babies will kind of sound particular letters out etc1