babyA study published in Child Development (2009; 80(5): 1376-84) combined three separate double-blind, placebo-controlled trials involving 229 infants and supplementation with a combination of docosahexaenoic acid (DHA) and arachidonic acid. Beginning at age 1 – 5 days the infants were given either a placebo or the fatty acid combination for one year, six week or between 4 – 6 months. The infants given the fatty acid supplement scored better on cognition tests than the placebo group.