For normal speech development a person must have a normally functioning brain with normal peripheral structures involved in speech, sufficiently normal hearing and vision, and a stimulating environment.
There is a simple definition for stuttering. Stuttering is an abnormal block in speech such as speech block and repetition of word vowels. Stuttering is divided into two groups, primary and secondary. Primary stuttering is a difficulty influencing speech without the presence of anxiety. The secondary type that is seen in adults is accompanied by anxiety. Of 1, 942 children who were interviewed in this study for the presence of stuttering, about 0.92% were confirmed stutterers. The male to female ratio was 2: l. The children's most common psychological problem was aggressiveness [44.4%] . Their ages were between 3.5 to 6.5 years. Most of them had had the problem from the early stages of speaking. Fifty percent had had some recovery, 11.1% were aggressive and 38.9% were alternative. Parents' ages, economic situation, and education had no significant effect
Maimened Jahroni ,Maimened Jahroni ,A. Mazeni M. ,
Stuttering in mashhad preschool children,
Iran. J. Ortorhinolayngol. 2003;
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