University of Edinburgh|MRC/CSO Social and Public Health Sciences Unit|University of Glasgow|MRC/CSO Social and Public Health Sciences Unit|University of Glasgow|University of Edinburgh
tests psychometric intelligence iqtype tests introduced century ago traditionally used educational workplace settings past decade predictive capacity nonpsychiatric health outcomes examined rapidly evolving field cognitive epidemiology health outcome commonly examined relation peoples differences measured intelligence cause mortality cohort studies older people indicate higher intelligence scores experience lower risk mortality1 problem examining association iq mortality age groups cognition lowering effect comorbidities might explain apparent protective effect high intelligence scores premature mortality