For example , after WWII , Black American students held a more negative stereotype of people from countries that were the United States 's WWII enemies .
Intergroup events ( e.g. , World War Two , Persian Gulf conflict ) often changed intergroup relationships .
After World War Two , Black American students held a more negative stereotype of people from countries that were the United States 's World War Two enemies .
Intergroup events ( e.g. , World War Two , Persian Gulf conflict ) often changed intergroup relationships .