Humans tend to form groups, which often find themselves in conflict with rival groups. But why do people show such a ready tendency to harm people in opposing groups? A new study led by researchers at ...

Humans have a deep-seated tendency to categorize others into “us” and “them,” a process that occurs within fractions of a second. The study demonstrated that feedback monitored in the presence of an ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 119, No. 40 (October 4, 2022), pp. 1-12 (12 pages) People sometimes prefer groups to which they do not belong ...

A quirk in how the brain processes faces makes it harder to tell members of a racial outgroup apart, according to new research. A quirk in how the brain processes faces makes it harder to tell members ...

It's a well-known principle in social psychology that people define themselves in terms of social groupings and are quick to denigrate others who don't fit into those groups. Others who share our ...