The Effects of the TOMATIS Listening Training on the Spatial Sense Hilde Tinkl, Gamboa, Panama 2011 In autumn 2008 I had been asked to accompany a psychology student at the University of Vienna working on her diploma thesis. Professor Dr. Georg Gittler, a pianist and psychologist, specialized on spatial senses, and his student Ulrike Koller contacted my Tomatis centre. I discussed different possibilities of cooperation and finally we decided to cooperate in this research project. Ulrike Koller drew a random sample of people, who wanted to join up the project. The Tomatis Centre Vienna performed the full listening programs for them without any financial support from outside. The attendants of the study received a Tomatis Listening Program free of charge. They only had to take the time for coming to our centre. Nevertheless it had been quite difficult to motivate them to come every day. This research project had been a large effort for my team and me. The worth of the listening trainings had been approximately 35.000 ₏. In the first part of my presentation I want to tell you more about the "spatial sense", about the spatial perception capability. The world of sounds we are living in is a world of spatial diversity. Experience and handling of space are governed by our spatial sense, which is an important condition for human ability and intelligence. Unfortunately there is no clear definition of the term "spatial sense". There are various definitions in research work, for example: • Spatial sense includes visualization, spatial relations and spatial orientation.