1. Paradoxical cognitive trajectories in men from earlier to later adulthood
- Author
-
Graham M L Eglit, Jeremy A. Elman, Linda K. McEvoy, Michael C. Neale, Daniel E. Gustavson, Mark Sanderson-Cimino, McKenna E. Williams, Sean N. Hatton, Mark W. Logue, Chandra A. Reynolds, William S. Kremen, Richard L. Hauger, Carol E. Franz, Lisa T. Eyler, Christine Fennema-Notestine, Amy J. Jak, Hong Xian, Anders M. Dale, Xin M. Tu, Nathan A. Gillespie, Nathan Whitsel, M. Panizzon, Olivia K. Puckett, Michael J. Lyons, Donald J. Hagler, Ruth E. McKenzie, and Rosemary Toomey
- Subjects
Male ,Cognitive aging ,Aging ,Twins ,Neuropsychological Tests ,Executive Function ,Cognition ,immune system diseases ,Medicine ,Longitudinal Studies ,Young adult ,skin and connective tissue diseases ,General Neuroscience ,Neuropsychology ,Brain ,Middle Aged ,Memory, Short-Term ,cardiovascular system ,Twin Studies as Topic ,Life course approach ,Mental health ,Adult ,Clinical Sciences ,General cognitive ability ,Article ,Young Adult ,Apolipoproteins E ,Memory ,Behavioral and Social Science ,Acquired Cognitive Impairment ,Humans ,Dementia ,cardiovascular diseases ,Aged ,Neurology & Neurosurgery ,business.industry ,Working memory ,Neurosciences ,medicine.disease ,Twin study ,Brain Disorders ,Short-Term ,Neurology (clinical) ,Geriatrics and Gerontology ,business ,Developmental Biology ,Demography - Abstract
Because longitudinal studies of aging typically lack cognitive data from earlier ages, it is unclear how general cognitive ability (GCA) changes throughout the life course. In 1173 Vietnam Era Twin Study of Aging (VETSA) participants, we assessed young adult GCA at average age 20 and current GCA at 3 VETSA assessments beginning at average age 56. The same GCA index was used throughout. Higher young adult GCA and better GCA maintenance were associated with stronger specific cognitive abilities from age 51 to 73. Given equivalent GCA at age 56, individuals who had higher age 20 GCA outperformed those whose GCA remained stable in terms of memory, executive function, and working memory abilities from age 51 to 73. Thus, paradoxically, despite poorer maintenance of GCA, high young adult GCA still conferred benefits. Advanced predicted brain age and the combination of elevated vascular burden and APOE-ε4 status were associated with poorer maintenance of GCA. These findings highlight the importance of distinguishing between peak and current GCA for greater understanding of cognitive aging.
- Published
- 2022