I guess you could say talkativeness (if it's a word) runs in my family. My children have inherited this trait and my son has a severe case. When he was in pre-k, my hubby & I were working to have him think without the need to share every thought in his head. His stream-of-conscience conversation was a standard after-daycare-drive-home dialouge.
So one day I was listening to his chatty voice talking about one thing or another in his day, but I wanted to hear the news...so I said, "Hey bud, why don't you think some things inside your head for a while?" My accommodating little guy replied, "Ok mom."
A very few minutes - maybe 2 - passed and he says, all innocence and excitement, "MOM, MOM, guess what - I was thinking something inside my head! I was thinking at school......"
And as he chatted along sharing his thoughts again, I thought 'Ok, I surrender, verbal learners must speak'