Remaja yang tidak dapat menahan dorongan seksualnya cenderung memiliki perilaku seksual berisiko. Penelitian ini bertujuan mengetahui faktor-faktor yang berhubungan dengan perilaku seksual remaja pada siswa SMPN X Jakarta tahun 2015. Desain penelitian menggunakan cross sectional dengan jumlah sampel 248 orang. Sebanyak 8,1% siswa memiliki perilaku seksual berisiko. Uji bivariat menunjukkan adanya hubungan antara variabel independen jenis kelamin, umur pertama kali terpapar pornografi di media internet, pengaruh teman sebaya, dan keterpaparan pornografi di media internet (jejaring sosial, website, chat room, dan game online) dengan variabel dependen perilaku seksual. Perilaku seksual berisiko dalam penelitian ini, yaitu kissing (6%), petting (1%), dan necking (1%), dan oral seks (0,4%).
Kata Kunci : Remaja, perilaku seksual, Sekolah Menengah Pertama

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Adolescents who are not able to control their sex drive, tend to have risky sexual behavior. The aim of this research is to find out the factors that are related to adolescents sexual behavior at Junior High School (SMPN X Jakarta) in 2015. This research has used cross sectional research design and sample of 248 people. There were 8,1% students who have risky sexual behaviour. Bivariate test showed that there are associations between independent variable of sex, age of the first time being exposured by pornography on internet media, influences from peer group and pornography exposure on internet media (socmed, website, chat room, and game online), and dependent variable of sexual behavior. Researcher has revealed three kinds of risky sexual behavior in this research, which are: kissing 6%, petting 1%, and oral sex 0,4%.
Key words : Adolescent, sexual behavior, Junior High School