The average age of diagnosis is between 3-8 years when the child enters school and the non-speaking behavior becomes problematic (APA, 2000). However, many parents will say that their child displayed signs of excessive shyness and/or inhibition since infancy. Once a child enters school there is increased expectation to perform, interact and speak and SM becomes apparent. It is at this time that teachers will point out the severity of the problem including concerns that the child is not speaking and participating in activities.