Baby talk for your newborn? >> new research is showing it's not just cute but essential for your little one's speech development. here's linzie davis. >> hello, mikey. do you know who i am? >> reporter: just like in the movie "look who's talking," we've all spoken in this high-pitched, highly exaggerated language known as baby talk or parentese. >> oh, yeah, she's gone. >> reporter: a new study shows our babies may be benefitting from the babbling. according to researchers at the university of washington in seattle, dolg dolling out the da, da, das may improve speech development. >> for the fi...