This study is designed to increase understanding of the genetic factors that may relate to stuttering. It is responsible for carrying the genetic information of the organism. DNA provides the directions for making all of the substances in the human body. DNA can be linked together in small segments called genes.
Genes can contain information about anything related to an organism.
In order for researchers to determine what genes are directly related to stuttering they must conduct several types of studies. Linkage studies, are studies of families that have a lot of members who stutter from several generations. The linkage studies will be completed using adult individuals who are diagnosed as persons who stutter and persons who have never stuttered, from one or more families with large numbers of family members who have stuttered over several generations. Candidate gene studies, look closely at genes suspected to be related to stuttering in patients who may or may not have a significant family history of stuttering. By conducting these studies, researchers hope to learn more about genes related to stuttering and ultimately find out what causes stuttering.