Letters Onset of cognitive decline

But some things improve with age

BMJ 2012; 344 doi: http://dx.doi.org/10.1136/bmj.e1043 (Published 14 February 2012) Cite this as: BMJ 2012;344:e1043
  1. Jake Harwood, professor of communication1
  1. 1University of Arizona, Tucson, AZ 85721, USA
  1. jharwood{at}u.arizona.edu

In their study of the timing of the onset of cognitive decline in the Whitehall II cohort, Singh-Manoux and colleagues emphasise decline and ignore the gains that occur with ageing.1 They do not mention that vocabulary increases in most of the analyses reported. Three of the four analyses that control for education show significant increases in …

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