IGFBP3 and dementia: Primary: SRT, Paragraph Recall, VR, SCWT, TMT, Verbal fluency, Token Test; Secondary: Dementia and psychiatric status: MMSE, BMIC, BPRS; Other laboratory measures: Serum E2, E1, FSH assays, IGF-1, IGFBP-3 assays, Serum epinephrine, and nor-epinephrine assays