How is it that you can speak fluently in some contexts and not speak fluently in other contexts? That most People Who Stutter (PWS) can speak fluently in certain contexts indicates that they have two primary speaking strategies that they have learned: 1) They can speak fluently which means they know how to talk. 2) Given the right circumstances, they also have a speaking strategy for blocking.Certainly these factors are influencing how we speak but they do not determine our stuttering behaviours.
What determines whether or not the PWS speaks freely and fluently or whether they block? We believe that it is the meaning that the PWS gives to the context of where they are speaking. If the context is non-threatening to them, the strategy for speaking freely and fluently will be activated and they will speak fluently. On-the-other-hand, if the context is threatening to the person, then the blocking strategy will be activated and the person will start blocking.
The cause: There could be several causes for blocking including genetic predispositions and/or developmental problems. However, our concern is not primarily about the first cause of blocking.