[P4–534]: LINKING MEASURES OF SUBJECTIVE COGNITION ACROSS INTERNATIONAL AGING STUDIES USING ITEM RESPONSE THEORY. (1st July 2017) - Rabin, Laura; Jones, Richard N.; Tommet, Douglas; Crane, Paul K.; Risacher, Shannon L.; Saykin, Andrew J.; Snitz, Beth E.; Amariglio, Rebecca; Rentz, Dorene M.; Sperling, Reisa A.; Sikkes, Sietske A.M.; ,