Most stutterers do not stutter while whispering, singing or speaking as part of a group of people. About 80 percent of children will outgrow the condition before adulthood. But one percent of the world population stutters. Stuttering does not mean the child has a psychological or emotional disorder. Research has not shown the exact cause for stuttering yet, but it could be a problem with the brain's motor control messages.
Most children go through periods of varying fluency.
One week they may speak quite clearly, all the time. The next week, they may repeat words and seem to stumble through their speech. While there is no clear way to predict when children will become stutterers and which children will outgrow the problem, there are several things to keep in mind. First, be patient. Hurrying the child or finishing their word or sentence for them will only increase their nervousness.