TY - Generic T1 - Critique of Cognitive Measures in the Health Retirement Study (HRS) and the Asset and Health Dynamics among the Oldest Old (AHEAD) Study Y1 - 2002 A1 - Margie E Lachman A1 - Avron Spiro III KW - AHEAD KW - cognitive functioning PB - National Institute on Aging CY - Bethesda, MD ER -