Jurnal Psikologi, 2022 (April), Vol. 21(1), 51-61 51 THE EFFECTIVENESS OF NAVIGASI DIRI: SMART INTERNET SELF-REGULATION-BASED INTERVENTION ON INTERNET ADDICTION IN ADOLESCENTS Imam Setyawan, Achmad Mujab Masykur Faculty of Psychology, Universitas Diponegoro Prof. Soedarto, SH. Street, Tembalang Campus, Semarang, Indonesia 50275 imam.setyawan@live.undip.ac.id Abstract This study aimed to examine the effectiveness of smart internet self-regulation-based intervention, the ‘NAVIGASI DIRI’, in reducing internet addiction in adolescents. The subjects of this study were 40 teenagers (16 girls, 24 boys) from a high school in Semarang, Central Java, Indonesia. The group intervention was carried out in five face-to-face sessions effectively for eight hours. The psychological scales that were compiled as a data collection tool were the Internet Addiction Scale (20 items, α = .843) and Self-Regulation Scale (25 items, α = .808). The experimental design used was pretest – posttest without control group design. The paired sample t-test on pretest and posttest data showed a significant decline in the level of internet addiction, t(39) = 2.640, p < .05, from pretest (M = 28.93; SD = 18.713) to posttest (M = 24.08; SD = 17.006). Meanwhile, the subjects’ self- regulation increased significantly, t(39) = -2.181, p < .05, from pretest (M = 71.85; SD = 6.192) to post-test (M = 73.40; SD = 6.250). The results of the simple regression test showed a moderate negative relationship between the two variables (r = -.548, p < .001; b = -1.490; t(38) = -4.035, p < .001). The coefficient of determination (R 2 = .300) indicated that 30% of students’ internet addiction was determined by their self-regulation. The NAVIGASI DIRI Intervention has been proven to be effective in increasing the level of self-regulation of students which contributes to reducing the level of internet addiction. Keywords: internet addiction; self-regulation; adolescents INTRODUCTION One of the factors which is inevitable from the current development, is the progress of science and technology, especially in information technology. Modernization supported by advances in information technology is truly extraordinary, the impact is very beneficial for mankind and more than what we could ever imagine. The pillar of advances in information technology that has brought very significant changes is the development of internet technology. The internet has become an integral part in modern society and functions as an essential medium for communication, socialization, and education (Kaess et al., 2014; Koyuncu et al., 2014). In reality, internet accessibility with unlimited content has become essential on a daily basis for adolescents. They use the internet to study, play, social network, gamble, chat, shop and watch pornography (Kuss & Griffiths, 2011; Kuss et al., 2013). Adolescents’ daily life can no longer be separated from the internet because many academic tasks and learning processes are facilitated by internet functions. Online learning has been widely adopted and it continues and develops, policy makers in Indonesia determine that online learning will continue to expand in an integrative manner with offline learning. It is indisputable that the internet is no stranger to Indonesian youth, especially from junior high to senior high levels (Budhyati, 2012). However, for adolescents who are still psychologically unstable and immature, the internet can be potentially misused. Instead of guiding them to grow and develop themselves, the internet can actually be a destructive agent for their personality. Internet addiction is one of the main health (Koyuncuet al., 2014) and social (Wu et al., 2015) problems in adolescents. They difficult to stop using the internet because of its anonymity, convenience, and accessibility, as