[ Contents | Search | Post | Reply | Next | Previous | Up ]
From: Steen Fibiger
Date: 20 Oct 2008
Time: 03:48:40 -0500
Remote Name: 193.163.229.21
I am not quite sure I understand your quuestion but i will try to answer your question anyway. My epidemiological twin study shows that stuttering primerely is caused by additive genetic effects and individual-specific environmental effects. Genetic dominans does only have very little effect for development of stuttering, and only for males according to our biometric modeling. Common environmental effects does not seem to be responsible for development of stuttering. Additive genetic effects can not change, but individual specific environmental effects can change, and changing the environmental effects may have en impact on the individual's stuttering.