New research indicates that by the time they are 9 months old, babies are better able to recognize faces and emotional expressions of people who belong to the group they interact with most, than they are those of people who belong to another race.
Babies don't start out this way; younger infants appear equally able to tell people apart, regardless of race.
"These results suggest that biases in face recognition and perception begin in preverbal infants, well before concepts about race are formed. It is important for us to understand the nature of these biases in order to reduce or eliminate [the biases]," said study researcher Lisa Scott, a psychologist at the University of Massachusetts, Amherst, in a statement.
In the study, 48 Caucasian infants were given the task of differentiating between faces of their own race and faces that belonged to another, unfamiliar, race. In another experiment, sensors placed on the babies' heads detected brain activity when the babies saw images of faces of Caucasian or African-American races expressing emotions that either matched or did not match sounds they heard, such as laughing and crying.
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