TY JOUR TI Educational migration: the risks of socio-psychological disorientation of foreign postgraduate student KW educational migration KW foreign postgraduate students KW new sociocultural environment KW host country KW motivation to thesis defence KW language barrier KW adaptation risks KW causes and consequences of socio-psychological disorientation KW xenophobic aggression KW social isolation in an ethnic group KW psychological and pedagogical support JO Russian Journal of Deviant Behavior AU Andrianova, R.A. PY 2026 IS 6 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION