1929 German-born writer and social worker Bruno Lasker publishes Race Attitudes in Children, setting up methods for the psychological study of children’s views on race.
Early 1930s Canadian psychologist Otto Klineberg works with lawyers fighting for equal salaries for black public-school teachers.
1954 The US Supreme Court rules that racial segregation in schools is unconstitutional, in the Brown v. Board of Education of Topeka hearings.
1978 Elliot Aronson devises the “jigsaw method” of teaching—where mixed-race groups of students work interdependently—to help reduce racial prejudice in integrated classrooms. ...