Diversity increases social adversity.
A 10% increase in diversity doubles the chance of psychotic episodes.
Diversity reduces voter registration, political efficacy, charity, and number of friendships.
Ethnic diversity reduces happiness and quality of life.
Diversity reduces trust, civic participation, and civic health.
Ethnocentrism is rational, biological, and genetic in origin.
Ethnic diversity harms health for hispanics and blacks.
Babies demostrate ethnocentrism before exposure to non-whites.
Ethnocentrism is universal and likely evolved in origin.
Diversity primarily hurts the dominant ethnic group.
Ethnic diversity reduces concern for the environment.
Ethnic diversity within 80 meters of a person reduces social trust.
Ethnic diversity directly reduces strong communities.
Ethnically homogenous neighborhoods are beneficial for health.
Diversity in American cities correlates with segregation.
Races are extended families. Ethnocentrism is genetically rational.
It is evolutionarily rational to be friends with someone genetically similar to you.
Racism and nationalism are rational and evolutionary advantageous strategies.
Homogeneous polities have less crime, less civil war, and more altruism.
States with little diversity have more democracy, less corruption, and less inequality.
There is extensive evidence people prefer others who are genetically similar.
Our analysis shows that peace does not depend on integrated coexistence, but rather on well defined topographical and political boundaries separating groups
The more integrated a neighborhood is, the less socially cohesive it becomes, and vice versa.
The more ethnically diverse the people we live around, the less we trust them.
Ethnocentrism, often thought to rely on complex social cognition and learning, may have arisen through biological evolution.
Diversity experiments in Germany end in disaster
Immigrants in Norway are a net loss to the economy
Immigrants in Sweden are a net loss to the economy
Denmark saved billions by restricting immigration:
Increases in diversity correlate with problems worldwide, and the downsides of diversity effect everyone, it’s a universal human problem:
More diversity in police departments correlates with more abuse, poorer performance and less trust:
Decreased community spirit, decreased altruism, and depressed social capital, less ethical behavior, more crime, fear, isolation and depression:
Also, a nice little study from Cornell University about how segregation creates peace: