The newest issue of the Am J of Clinical Nutrition had an article entitled, "Feeding formula without arachidonic acid and docosahexaenoic acid has no effect on preferential looking acuity or recognition memory in healthy full-term infants at 9 mo of age. Haven't read the entire article yet, but thought you'd like to read what's in the abstract. The abstract:"Preferential looking acuity and novelty preference were determined by using Teller Acuity Cards and the Fagan Test of Infant Intelligence respectively, for 399-433 healthy full-term infant at 39 plus or minus 1 wk. of age. Duration of BFing and age of infant at introduction and amount and type of formula were determined by questionnaire. 74 (17%) never BF; another 92 (21%) were still receiving breastmilk as the milk source at 39 wks of age. There were no differences in visual acuity or novelty preference among the infant when they were stratified by incidence or duration of bfing..."(The formula used did not contain docosahexaenoic or arachidonic acid.) "The studies indicate that formulas containing adequate linoleic and linolenic acids, w/o arachidonic or DHA, impose no measurable deficits in performance in these visual and cognitive developmental tests at 9 mo of age in healthy full-term infants. " Innis SM, et al:Feeding formula without arachidonic acid and docosahexaenoic acid has no effect on preferential looking acuity or recognition memory in healthy full-term infants at 9 mo of age. Am J Clin Nutr 64:40-6, 1996.