Now the puzzle has finally been solved by this outstanding new book which details a completely new approach to treating this debilitating condition. Bob Bodenhamer explains that this phenomenon results from the thinking (cognition) of the stammerer as he or she associates speaking with a lot of fear and anxiety about blocking. Most blocking is no more than a panic attack expressed in the muscles that control breathing and speaking. This book both explains the structure of blocking and provides the tools for gaining more fluency.