This study aims to analyze the influence of the social media platform TikTok on the consumer behavior of teenagers in the Penjaringan toll underpass area, North Jakarta. The research uses a quantitative approach with an explanatory survey method on 30 active TikTok-using teenagers. Data were collected through questionnaires and analyzed using simple linear regression with the help of IBM SPSS Statistics 25. The results show that TikTok has a significant impact on teenage consumer behavior with a significance value of 0.008 (<0.05). The regression equation obtained is Y = 21.048 + 0.364X, indicating a positive relationship between TikTok usage and consumer behavior. The coefficient of determination (R Square) value of 0.225 shows that TikTok contributes 22.5% to teenage consumer behavior, while 77.5% is influenced by other factors outside the study. These findings indicate that the higher the intensity of TikTok use, the higher also the tendency for teens to have consumptive behavior. Keywords: TikTok, social media, consumptive behavior, adolescents, Penjaringan.
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