Researchers are trying to locate the genes which cause people to stutter and are looking for 1000 New Zealanders to take part.
University of Otago Professor Lynette Sadleir is a paediatric neurologist and involved in the project and she tells Jesse that while it is known genetics have a role to play and four genes have been identified, the exact cause is yet to be discovered.
To sign up for the study, visit the study website, or for more details email geneticsofstuttering@mcri.edu.au.
Lynette Sadleir Photo: Otago University Wellington