Mary Giuliani: The 'Window of Tolerance' was created by Dr. Pat Ogden. It is in the book "Trauma and The Body". Dr. Ogden's book are the core of a major women's hospital trauma program we have running here in Toronto (Canada's largest city). [Their curriculum is also heavily informed by the work of Dr. Peter Levine (UCLA; NASA) and his book "Waking The Tiger".] HTH!