A new study has found a link between those who have cleaning obsessions and those who have racist tendencies.

Experts at Yale University figured out a link in the thought processes inside humans that those who have a displeasure for dirty shelves also had discriminatory mannerisms.

The Metro reported that scientists tested the responses of Chinese and American people to messy patterns and were able to make a link to their racial views.

Carol Sigelman, professor of psychology at George Washington University, said of the study: "The link between social prejudice and pattern deviancy aversion might be 'baked into human nature' during childhood.

"Children as young as three turn out to be eager conformists who detect social norms, and stand ready to squeal on and punish norm violators.

"The ingredients of prejudice are in place very early in life. Humans may start out all too ready to judge one another, but how do some forms of human difference become more stigmatising than others, and how do some human perceivers become more prone to stigmatise?

"The research provides a simple potential explanation for why some people feel uneasy around and dislike people who deviate from societal norms."

The study ultimately found that there was a possibility that those who do not like unusual patterns or mess were the same people who had increased levels of stigma an prejudice.