Unhappiness, health and cognitive ability in old age.
BACKGROUND: To test whether scores on depression inventories on entry to a longitudinal study predict mental ability over the next 4-16 years. METHOD: Associations between scores on the Beck Depression Inventory and on tests of intelligence, vocabulary and memory were analysed in 5070 volunteers aged 49-93 years after differences in prescribed drug consumption, death and drop-out, sex, socio-economic advantage and recruitment cohort effects had also been considered. RESULTS: On all cognitive ...Expand abstract
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