“Behavioural treatment according to the Intense World Theory is proposed to focus on filtering the extremes in the intensity of all sensory and emotional exposure as well as relaxation and progressive systematic desensitization to stimuli presentation. The probably most counter-intuitive suggestion that emerges from the Intense World Theory is to surround the child with a highly predictable and calm environment protected from abrupt sensory and emotional transients and surprises for the first years of life to prevent excessive sensory and emotion driven brain development.”