Inclusion and exclusion criteria
| Inclusion criteria: | |
| 1 | Progressive cognitive deficits |
| 2 | Age >40 |
| 3 | Native English speaker |
| 4 | Adequate visual and auditory acuity to complete neuropsychological testing |
| 5 | Reliable caregiver who is capable of providing correct information about the patients |
| Exclusion criteria: | |
| 1 | Lifetime history of schizophrenia, manic depressive disorder, or schizoaffective disorder |
| 2 | History of electroconvulsive therapy |
| 3 | Current alcohol or drug misuse/dependence, or history of alcohol or drug misuse/dependence within 2 years of the onset of the symptoms of dementia |
| 4 | Subjects with history of cancer within the previous 5 years |
| 5 | Current significant disease or unstable medical condition that could affect neuropsychological testing (chronic renal failure, chronic hepatic disease, severe pulmonary disease) |