ASSERTIVENESS AND SELF-ESTEEM AS PREDICTORS OF NEGATIVE AFFECTIVITY IN ADOLESCENTS: THE ROLE OF GENDER AND PLACE OF RESIDENCE – BELGRADE AND KOSOVSKA MITROVICAж. bastina [Internet]. 2025 Oct. 24 [cited 2026 Sep. 20];35(67). Available from: https://test.aseestant.ceon.rs/index.php/bastina/article/view/61721