Sounding out words for the first time is hard for children. Repeating sounds and dropping of letters is common. In fact, 30 percent of kids have difficulty sounding out words during their early development, while only 1 percent of those have true stuttering. As a parent, when should you be concerned about your child’s speech patterns? Pediatrician Dr. Cindy Gellner explains common childhood speech patterns and what to look for if your child has a stutter.