intergroup relations
... that the study of intergroup relations has led to the development of psychological interventions to reduce group conflict and prejudice?
... that the study of <b id="mwAYo"><a href="./Intergroup_relations" id="mwAYs" rel="mw:WikiLink" title="Intergroup relations">intergroup relations</a></b> has led to the development of psychological interventions to reduce <a href="./Group_conflict" id="mwAYw" rel="mw:WikiLink" title="Group conflict">group conflict</a> and <a href="./Prejudice" id="mwAY0" rel="mw:WikiLink" title="Prejudice">prejudice</a>?