[P4–286]: A COMPARISON OF METHODS TO MEASURE INTRA‐INDIVIDUAL COGNITIVE VARIABILITY IN NON‐HISPANIC WHITES AND AFRICAN AMERICANS IN THE WISCONSIN REGISTRY FOR ALZHEIMER'S PREVENTION (WRAP). (1st July 2017) - Koscik, Rebecca L.; Johnson, Sterling C.; Norton, Derek L.; Clark, Lindsay R.; Green‐Harris, Gina; Hermann, Bruce P.; Asthana, Sanjay; Edwards, Dorothy Farrar; Carlsson, Cynthia M.; Gleason, Carey E.