Study indicates ethnic hate is contagious

Why do ethnic conflicts in some parts of the world flare up so easily and
spread so fast? Is ethnic hate and intolerance contagious? Researchers from
the Czech Republic and Slovakia joined forces to try to find the answers to
some of those questions and arrived at some surprising conclusions. I spoke
to Associate Professor Michal Bauer, an expert on experimental and
behavioral economics at CERGE-EI, who is one of the authors of the study,
and began by asking him what motivated the research in this field.