The purpose of this study is to determine how much the influence of using Tiktok application on the self-confidence level in regular students of Communication Science class 2016-2019. This study used a quantitative descriptive study by collecting questionnaire data from regular students of Communication Science class 2016-2019 at the Balitar Islamic University. From the results of data processing, the variable use of the Tiktok application (X) with a variable level of self-confidence (Y) has a significant effect, it can be concluded by looking at the t test results as 11.199> t-table as 1.99601 with a determinant coefficient as 79.7 %. So, it can be concluded that there is an effect of using the Tiktok application on the level of confidence of regular students of Communication Science class 2016-2019 at the Balitar Islamic University as 79.7%.
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