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The face of early cognitive decline? Shape and asymmetry predict choice reaction time independent of age, diet or exercise

  • William Brown
    ,
  • Agnese Usacka
Research Output:
Contribution to journal
Article
 Peer-review

Open access

Abstract

Slower reaction time is a measure of cognitive decline and can occur as early as 24 years of age. We are interested if developmental stability predicts cognitive performance independent of age and lifestyle (e.g., diet and exercise). Developmental stability is the latent capacity to buffer ontogenetic stressors and is measured by low fluctuating asymmetry (FA). FA is random – with respect to largest side – departures from perfect morphological symmetry. Degree of asymmetry has been associated with physical fitness, morbidity and mortality in many species, including humans. We expected that low FA (independent of age, diet and exercise) will predict faster choice reaction time (i.e., correct keyboard responses to stimuli appearing in a random location on a computer monitor). Eighty-eight university students self-reported their fish product consumption, exercise, had their faces 3D scanned and cognitive performance measured. Unexpectedly, increased fish product consumption was associated with worsened choice reaction time. Facial asymmetry and multiple face shape variation parameters predicted slower choice reaction time independent of sex, age, diet or exercise. Future work should develop longitudinal interventions to minimize early cognitive decline among vulnerable people (e.g., those who have experienced ontogenetic stressors affecting optimal neurocognitive development).

Publication Information

Output type

Research Output:
Contribution to journal
Article
 Peer-review

Original language

English

Pages from-to (Number of pages)

Pages 1364

Journal (Volume, Issue Number)

Symmetry (Volume 11, Issue 11)

Publication milestones

  • Accepted/In press - 29/10/2019
  • Published - 03/11/2019

Publication status

Published - 03/11/2019

Publication IDs

  • handle.net: 10547/623564
  • Scopus: 85075502918

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