dc.description.abstract | Background. Sexually Transmitted Infections (STIs) are infectious diseases that can be transmitted through sexual intercourse. STI is a dangerous disease that has become a major health problem in the world. The effects of sexually transmitted infections include infertility in both women and men, disability, pregnancy disorders, cancer and can even cause death. According to the 2007 and 2012 Indonesian Demographic and Health Survey (IDHS) results, premarital sex behavior increased in 2007 adolescents with the age group 15-19 years having premarital sex by 3.7% increasing to 4.5% in 2012 followed by the age group 20-24 years increasing from 10.5% to 14.6%. Aim. Knowing the level of knowledge of students of the Faculty of Psychology X batch of 2019, 2020 and 2021 about Sexually Transmitted Infections. Method. The design of this study was a descriptive study with a cross-sectional design approach and the sampling used was consecutive sampling, by distributing online questionnaires to students of the Faculty of Psychology X batch of 2019, 2020, about Sexually Transmitted Infections (STI). Results. From the results of this research it was found that the level of knowledge for good knowledge was 8 people (9.1%), fairly good 49 people (55.7%) and not good enough 31 people (35.2%). Conclusion. Overall the level of knowledge about sexually transmitted infections batch of 2019, 2020 and 2021 Faculty of Psychology X is in the fairly good or moderate category (55,7%). | en_US |