http://www.physorg.com/news10852.html
"A study has found that by the age of three months many babies start to prefer faces of people from their own race to those of another race. This early favoritism may represent the first glimmers of racial prejudice, psychologists say. On the bright side, the researchers also found that babies raised with frequent exposure to people of other races don't develop this early bias. This discovery may help guide future research on how to counter racism, they suggested. Early preferences for own-race faces may contribute to race-related biases later in life,the psychologists wrote in a paper on the study, published in the February issue of the research journal Psychological Science. Typically, by the age of 4 to 6 years, children already display racial stereotyping and prejudice in a variety of contexts. "