Are processing speed tasks biomarkers of cognitive aging?

@article{Deary2010ArePS,
  title={Are processing speed tasks biomarkers of cognitive aging?},
  author={Ian J. Deary and Wendy R. Johnson and John M. Starr},
  journal={Psychology and aging},
  year={2010},
  volume={25 1},
  pages={219-28}
}
We examined the association between 5 processing speed measures and general cognitive ability in a large (>900) sample of relatively healthy men and women at age 70. The processing speed tests were the Wechsler Digit Symbol-Coding and Symbol Search, simple reaction time, 4-choice reaction time, and inspection time. To inquire whether the processing speed tasks might be biomarkers of cognitive aging, we examined the attenuations in their associations with general cognitive ability after… CONTINUE READING

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