Elucidating the contributions of processing speed, executive ability, and frontal lobe volume to normal age-related differences in fluid intelligence
SCHRETLEN D, PEARLSON G, ANTHONY J, AYLWARD E, AUGUSTINE A, DAVIS A, BARTA P. Elucidating the contributions of processing speed, executive ability, and frontal lobe volume to normal age-related differences in fluid intelligence. Journal Of The International Neuropsychological Society 2000, 6: 52-61. PMID: 10761367, DOI: 10.1017/s1355617700611062.Peer-Reviewed Original ResearchConceptsPerceptual comparison speedFluid intelligenceExecutive abilitiesFrontal lobe volumeProcessing speedProcessing speed theorySimple processing speedHierarchical multiple regression analysisComparison speedFrontal brain structuresLobe volumeAge-related differencesAge-related declineNormal age-related differencesCognitive agingRegional brain volumesSpeed theoryMultiple regression analysisBrain structuresIntelligenceAge-related variationsBrain volumeNormal adultsMagnetic resonance imagingSame decline