Online Alzheimer's tests: Unscientific and inaccurate

Stay away from simplistic check-the-box memory quizzes. They may lead to unnecessary worry—or false reassurance.

Memory tests are all over the Internet, but they are notoriously poor at evaluating your memory and mental skills. If you are already concerned about your memory and wonder if it means Alzheimer's disease, talk to a professional. "If people are that worried, they really should make an appointment with a doctor," says Dorene Rentz, clinical neuropsychologist and co-director of the Center for Alzheimer Research and Treatment at Harvard Medical School.