Based on experimental studies about the human ear-voice-connection and his knowledge about the prenatal listening experience, French physician, scientist and philosopher Alfred A. Tomatis® developed a program of auditory stimulation and training called the Tomatis® Method, which is supposed to treat a wide variety of emotional, psychological and physical problems. This thesis deals with the impact of the Tomatis® Method on spatial ability utilizing a quasi-experimental design with pre, post and follow-up test. As psychometric instruments the Three-Dimensional Cube Comparison Test (3DC, dt.: Dreidimensionaler Würfeltest – 3DW; Gittler, 1990) and the Endless-Loops-Test (dt.: Endlosschleifentest – EST; Gittler & Arendasy, 2003), which are both Rasch-scaled, were exerted. Analysis (n=60) using the Linear Logistic Test Model (Fischer, 1995) revealed reliable associations between the listening training and spatial ability skills. Positive effect sizes were found, favoring those, who had participated in the Tomatis® treatment. Especially the 3DC-data showed that the improvements continued even after the end of the intervention, which can be constituted as „Extended Tomatis® Effect“.
