This project will focus on the development and testing of efficient, cost effective measures that are specifically designed for use in Alzheimer's Disease (AD) primary prevention trials.

This project will focus on the development and testing of efficient, cost effective measures that are specifically designed for use in AD primary prevention trials. The new or improved measures that have been developed will then be evaluated in 650 nondemented subjects enrolled in a simulated Alzheimer's disease prevention trial. Once enrolled, subjects will be followed for four years with annual clinical evaluations and interim six-month phone calls.

• Ferris SH, Aisen PS, Cummings J, Galasko D, Salmon DP, Schneider L, Sano M, Whitehouse PJ, Edland S, Thal LJ; Alzheimer's Disease Cooperative Study Group. ADCS Prevention Instrument Project: overview and initial results. Alzheimer Dis Assoc Disord. 2006 Oct-Dec;20(4 Suppl 3):S109-23.
• Schneider LS, Clark CM, Doody R, Ferris SH, Morris JC, Raman R, Reisberg B, Schmitt FA. ADCS Prevention Instrument Project: ADCS-clinicians' global impression of change scales (ADCS-CGIC), self-rated and study partner-rated versions. Alzheimer Dis Assoc Disord. 2006 Oct-Dec;20(4 Suppl 3):S124-38.
• Galasko D, Bennett DA, Sano M, Marson D, Kaye J, Edland SD; Alzheimer's Disease Cooperative Study. ADCS Prevention Instrument Project: assessment of instrumental activities of daily living for community-dwelling elderly individuals in dementia prevention clinical trials. Alzheimer Dis Assoc Disord. 2006 Oct-Dec;20(4 Suppl 3):S152-69.
• Sano M, Zhu CW, Whitehouse PJ, Edland S, Jin S, Ernstrom K, Thomas RG, Thal LJ, Ferris SH; Alzheimer Disease Cooperative Study Group. ADCS Prevention Instrument Project: pharmacoeconomics: assessing health-related resource use among healthy elderly. Alzheimer Dis Assoc Disord. 2006 Oct-Dec;20(4 Suppl 3):S191-202.
• Walsh SP, Raman R, Jones KB, Aisen PS; Alzheimer's Disease Cooperative Study Group. ADCS Prevention Instrument Project: the Mail-In Cognitive Function Screening Instrument (MCFSI). Alzheimer Dis Assoc Disord. 2006 Oct-Dec;20(4 Suppl 3):S170-8.
• Cummings JL, Raman R, Ernstrom K, Salmon D, Ferris SH; Alzheimer's Disease Cooperative Study Group. ADCS Prevention Instrument Project: behavioral measures in primary prevention trials. Alzheimer Dis Assoc Disord. 2006 Oct-Dec;20(4 Suppl 3):S147-51.
• Patterson MB, Whitehouse PJ, Edland SD, Sami SA, Sano M, Smyth K, Weiner MF; Alzheimer's Disease Cooperative Study Group. ADCS Prevention Instrument Project: quality of life assessment (QOL). Alzheimer Dis Assoc Disord. 2006 Oct-Dec;20(4 Suppl 3):S179-90.

Inclusion Criteria:

• 75 years or older.
• Fluent in English or Spanish.
• Stable medical condition for four weeks prior to screening visit.
• Stable medications for four weeks prior to screening visit.
• Either cognitively normal, or mild cognitive impairment. If MCI, the subject's CDR at screening have a global score of 0.5.
• mMMSE score greater than 88 for subjects with at least 8 years education, or greater than 80 for subjects with less than 8 years education, and FCSRT total free plus cued recall score greater than 44 with 3 learning trials.
• Willing to participate in four to five year follow-up study.
• Willing to identify person who can serve as informant.
• At least six years education or work history sufficient to exclude mental retardation

Exclusion Criteria:

• Meets DSM IV criteria for dementia
• History of clinically significant medical illness that would interfere with participation in trial, including active malignancy, myocardial infarction, or cerebrovascular accident within the past year
• Alcohol or substance abuse and/or active major psychiatric disorders
• Concurrent participation in a clinical drug trial
• History of mental retardation