Why wearing black can shape how others perceive a person, according to psychology

People who wear black most days are not necessarily trying to hide or appear serious. They may simply prefer the color, find it practical or have maintained the same habit for years. Psychology research suggests that black can affect first impressions, but it does not support a single explanation for everyone who wears it.

A classic 1988 study by Mark Frank and Thomas Gilovich of Cornell University examined the uniforms of professional American football and hockey teams. Teams wearing black had received more penalties than teams in other colors. In follow-up experiments, participants also tended to view black-uniformed teams as more aggressive, while the researchers found indications that wearing black could influence the behavior of those who wore it.

The findings came from a highly specific setting: competitive sports, where aggression has a different role from everyday life. Later research tested whether similar associations appeared outside sport. A study led by researchers at Masaryk University in the Czech Republic showed digitally altered photographs to 475 secondary students. The students rated people whose clothing appeared in different colors and situations.

Black clothing made the men in the images appear more aggressive, but the same pattern did not emerge in the same way for women. Wearing black also did not automatically make a person seem more respectable. The setting changed the evaluations as well, showing that clothing is not interpreted in isolation.

Black clothing at a formal gathering may create a different impression from a black uniform in a sporting competition. Who wears the color, where they appear and what observers know about them all shape its meaning. The research therefore offers no universal psychological rule linking everyday black clothing to a particular personality.