Wondimu, Habtamu(proBerhanu, Eyerusalem2022-02-012023-11-182022-02-012023-11-182021-10http://etd.aau.edu.et/handle/12345678/29826The urban cities of Ethiopia, particularly Addis Ababa youth students in high school often engage themselves with the new viral social media platform named Tik Tok. This frequent interaction with Tik Tok app is perusing a noticeable discrepancy on students’ behavior. This study tried to answer whether there is an addiction among students, a presence of cognitive dissonance and does a noticeable cognitive behavioral change occurs among students due to exposure of Tik Tok. To address this, a priority cross-sectional quantitative study method was used followed by a sequential qualitative study of in-depth interview to explain the data collected on quantitative study. The researcher employed survey designed with an enumerator administered structured questioner to select 135 students through systematic random sampling technique and additional of 12 students for in-depth interview through convenient sampling method. The quantitative data was examined through cross-tabulation Pearson Chi-Square test method to measures and see the associations’ of the independent and dependent variables toward addiction, cognitive dissonance and cognitive behavior change. And the qualitative data was analyzed by observing the common perception, behaviors and patterns. The Pearson Chi-Square findings shows addiction presence on Tik Tok is significant and the presence of cognitive dissonance is visible because students’ reasoning to join Tik Tok as an entertainment is still considered to be aspiring and the perceived fake personalities and is being perused to be replicated in day to day lives. Also dissonance behavioral changes were observed on students’ clothing style, attitudes change towards friends and academic performance decrease. This study shows awareness needs to be created particularly; families and schools need to be aware of the discrepancy that Tik Tok is perusing to VII develop undesirable behavior over time. In addition further empirical studies need to be conducted to measure Tik Tok significant impact on students’ psychological well-beingenHabtamuThesis