The attitude of students who cannot convey what they feel without hurting the feelings of others is because the student cannot behave assertively. Assertive behavior is expressing what is felt or thought without hurting the feelings of others. This study aims to see differences in assertive behavior of students based on cultural backgrounds (Minang, Malay, Batak, Kerinci). This study uses a comparative descriptive approach carried out on BK FIP UNP students with a total sample of 248 people, using a proportional random sampling technique. The instrument of this research is a questionnaire about assertive behavior with a Likert scale model. Data were analyzed using analysis of variance (ANOVA) and data processing using SPSS version 20.00. Th...