The intergroup bias makes us to place a greater value on our group members than other group members. In society, people sort themselves into groups and sometimes they label other groups as weak and incompetent. In some situations, minority groups are viewed as threats by majority groups when they differ too much from them. The effects of such attitudes and behaviors can be profound on society and communications, and lead to discrimination against outgroups and a social division. In this study, we review literature in this area in order to find practical ways to reduce prejudice and in-group bias. We discuss related influencing factors such as intergroup contact, intergroup acceptance, intergroup similarities, social norms, status of a group, and size. This study provides some significant takeaways include the relationship between anxiety and in-group bias and our tendency to behave less prejudiced in times of confidence and less stress; as well as the effect of revealing intergroup similarities through education and social media. Other procedures are also listed that can be used by everyone especially policymakers and researchers to find and develop effective approaches to improve societies by overcoming in-group bias. Other methods are also listed that can be used by everyone especially policymakers and researchers to find and develop effective approaches to improve societies by overcoming in-group bias.
