http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. A preliminary report published in the August 20 issue of JAMA suggests that within-person variability on neuropsychological testing may be associated with development of dementia in older adults. http://www.physorg.com/news138381753.html Medicine & Health Tue, 19 Aug 2008 16:22:33 EST news138381753