Compositions including an effective amount of each of phosphatidyl serine, choline, and oleic acid, and methods for improving cognitive performance that include administering such compositions to a subject, are described herein. The compositions can be nutritional compositions such as bars or liquids suitable for oral administration. The combination of phosphatidyl serine, choline, and oleic acid provides synergistic or complimentary modes of action that improve the overall effect of these compounds.