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Dev Psychol. 2019 Jun 13. doi: 10.1037/dev0000740. [Epub ahead of print]

No evidence for a common factor underlying visual abilities in healthy older people.

Author information

1
Laboratory of Psychophysics.
2
Department of Experimental Psychology.
3
Charite - Institute of Biometry and Clinical Epidemiology.
4
Department of Psychology.
5
Institute of Cognitive Neurosciences.

Abstract

The world's population is aging at an increasing rate. Even in the absence of neurodegenerative disorders, healthy aging affects perception and cognition. In the context of cognition, common factors are well established. Much less is known about common factors for vision. Here, we tested 92 healthy older and 104 healthy younger participants in 19 visual tests (including visual search and contrast sensitivity) and three cognitive tests (including verbal fluency and digit span). Unsurprisingly, younger participants performed better than older participants in almost all tests. Surprisingly, however, the performance of older participants was mostly uncorrelated between visual tests, and we found no evidence for a common factor. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

PMID:
31192641
DOI:
10.1037/dev0000740

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