Scientific publication policies have been implemented as an effort to increase the level of scientific publications. This is because the abundance of academia in Indonesia were not in line with the number of scientific publications, especially internationa l publications. Through policies made by the government in collaboration with universities/colleges that administer education units, it is expected that there will be an increase in scientific publications, especially at the international level. The policy has been going well with the increasing level of international scientific publications in the last 5 years, but not all are at the international level. The author analysed the effect of the scientific publication policy combined with socioeconomic status, as the exogenous variable, to find out the effect on scientific publications, as the endogenous variable. Motivation are used as the mediator between variables. Data were collected from 242 graduate students in Central Java Province, Indonesia, who had already submitted or published their articles. The data were analysed using a Structural Equation Modeling (SEM) application, SmartPLS 3. The results indicate that (1) perception of scientific publication policy has significant and positive effect on the motivation, but insignificant on types of publications, (2) socioeconomic status has significant and positive effects on the types of publication, both direct and indirect effects, and (3) motivation has a significant effect on the types of publication which can be used as a mediator that has a significant effect