The aim of this study is to investigate whether the changing associate professorship criteria makes a difference in the scientific presentations in terms of author number, presentation type and scientific research type in The Turkish National Congress of (ORL-HNS). Material and Methods: The Turkish National Congress of ORL-HNS held in the 3 years before and after the change of criteria for associate professorship were included in the study. For evaluation, past congress proceedings books on the website of the Turkish Ear-Nose-Throat Head and Neck Surgery Association were used. Results: When oral presentations were evaluated according to the number of authors per study, the number of study by a single author was 50 (8.7%) in the period after the change in criteria and 10 (2.0%) in the period before. When oral presentations were evaluated according to the type of study, the number of retrospective studies increased significantly after the varying criteria compared to before When the poster presentations were evaluated according to the number of authors per study, there was no statistically significant difference in the number of studies by a single author between the 3 years before and after the change of the criteria (p=0.338). Conclusion: The findings of our study do not show that the studies after the changes in the criteria are scientifically less valuable or there are ethical problems in the studies. However, it clearly shows that new criteria cause some changes in the behavior of researchers in scientific activities.