Abstract
Survival effects in cognitive performance were examined in the Seattle Longitudinal Study (SLS) for a sample of 605 individuals who subse quently died (decedents) (n=343 males; n = 262 females; M = 73. 73 years of age) and a control group of 613 survivors (n = 299 males; n = 314 females; M = 71 . 91 years of age ). A sample of survivors of similar age and have a similar level of education as the decedents was selected . Differences in cognitive functioning and cognitive style in level and change over time between decedents and survivors were studied . Decedents had lower levels of crystallized abilities ( Verbal Meaning and Numerical Ability ), visualization abilities ( Spatial Orientation ), verbal memory ( Delayed Word Recall ), perceptual speed ( Identical Pictures ),
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