Olivio J. Clay|Jerri D. Edwards|Lesley A. Ross|Ozioma C. Okonkwo|Virginia G. Wadley|David L. Roth|Karlene Ball
Visual Function and Cognitive Speed of Processing Mediate Age-Related Decline in Memory Span and Fluid Intelligence
University of Alabama at Birmingham|University of South Florida|Australian National University|University of Alabama at Birmingham|University of Alabama at Birmingham|University of Alabama at Birmingham|University of Alabama at Birmingham
objectives evaluate relationship sensory cognitive decline particularly respect speed processing memory span fluid intelligence addition common cause sensory degradation speed processing hypotheses compared method structural equation modeling used investigate complex relationships among agerelated decrements areas results crosssectional data analyses included 842 older adult participants 73 years accounting agerelated declines vision processing speed direct associations age memory span age fluid intelligence nonsignificant older age associated visual decline associated slower speed processing turn associated greater cognitive deficits discussion findings support sensory degradation speed processing accounts agerelated cognitive decline furthermore findings highlight positive aspects normal cognitive aging older age may associated loss fluid intelligence visual sensory functioning processing speed maintained