A new survey study links belief in the concept of social Darwinism with certain dysfunctional psychological characteristics, such as exploitative attitudes towards others, hostility, and low self-esteem. Piotr Radkiewicz of the Polish Academy of Sciences and Krystyna Skarzynska of the University of Social Sciences and Humanities in Warsaw, Poland, present these findings in the open-access journal PLOS ONE on August 11, 2021.