Education begins at birth, (some say at conception), and ends at the grave. So at the time the research was begun at ages 5 and so on, the children in the study had already accumulated an enormous amount of information about their milieu including language categorizations. Therefore, to conclude from those studies that children come into the world programmed to be racist is highly questionable. "You've got to be taught to hate and fear, you've got to be taught from year to year, to hate all the people your relatives hate, you've got to be constantly taught." Rodgers & Hammerstein.
Donald Trump: Israeli settlement construction in West Bank should 'keep going' (Haaretz)
from the article: Are we born racist? A new Israeli study has some surprising answers