Artificial groups do not lead to immediate prejudice - two or more groups in competition for the same resources is what gives rise to conflict.
What does realistic conflict theory say about the causation discrimination?
it results from a process of negative stereotyping of the other group.
How can inter group hostility be increased and decreased?
It can be increased by interdependent goals - one group has to succeed for others to be at a loss. It can be decreased by superordinate goals - mutually desired results that require both group participation.
Evaluate realistic conflict theory using SCOUT!?
S - Sherif Et Al. C - Tajfel - no need for competition for prejudice to arise. O - Social Identity Theory. U - Hostility can be decreased. T - Field experiments are less scientific but credible.