Stuck with a word on the tip of your tongue when talking to a toddler? Don't worry — a new study finds that hesitant speech may help the kid learn new vocabulary. Language disfluencies, or the "ums" ...

So uh, when it comes to the um, filler words that men and women use, there are some uh, pretty big differences, according to a UPenn professor. Mark Liberman, who teachers linguistics at Penn, took a ...

Stuck with a word on the tip of your tongue when talking to a toddler? Don't worry — a new study finds that hesitant speech may help the kid learn new vocabulary. Language disfluencies, or the "ums" ...