Early detection of Alzheimer's disease - before symptoms are visible - may be a key to stopping the disease's progression. What warning signs are researchers looking for and what tools can they use? Paul Aisen, MD joins William Mobley, MD, PhD to discuss optimal assessments for diagnosing the disease, novel tools making earlier diagnosis possible, and the road map to developing drugs to slow, halt, and prevent Alzheimer's. Recorded on 7/29/2014. (#28296)