A new study in the latest edition of Pediatrics followed more than 2,800 families with children from birth to age 17.
Researchers found late talkers were no more likely to be shy, depressed, or aggressive than their peers.
The study showed that one out of ten two-year-olds were late talkers.
Doctors say most usually catch-up by kindergarten.
Researchers say the findings support a wait-and-see approach for late talkers with otherwise normal development.