Doubts of reliability of SISI-test are based on lack of understanding and knowledge of what this test can disclose and where it should be placed in an audiologic test battery. Examination of normal hearing medical students with the SISI-test showed much better results than comparable test figures of other authors. There is a distinct difference with regard to the test intensity as well as the test frequency. Results show that their is no reason to disqualify the SISI-test.