According to another study conducted on a school in the poor periphery of Rio de Janeiro, autosomal DNA study (from 2009), the "pardos" there were found to be on average over 80% European, and the "whites" (who thought of themselves as "very mixed") were found out to carry very little Amerindian and/or African admixtures. "The results of the tests of genomic ancestry are quite different from the self made estimates of European ancestry", say the researchers. In general, the test results showed that European ancestry is far more important than the students thought it would be. The "pardos" for example thought of themselves as ⅓ European, ⅓ African and ⅓ Amerindian before the tests, and yet their ancestry was determined to be at over 80% European. The "blacks" (pretos) of the periphery of Rio de Janeiro, according to this study, thought of themselves as predominantly African before the study and yet they turned out "predominantly European" (at 52%), the African contribution at 41% and the Native American 7%.