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GeroScience

, Volume 40, Issue 3, pp 293–303 | Cite as

Factors that positively or negatively mediate the effects of age on working memory across the adult life span

  • Selene CansinoEmail author
  • Frine Torres-Trejo
  • Cinthya Estrada-Manilla
  • Joyce Graciela Martínez-Galindo
  • Evelia Hernández-Ramos
  • Mariana Ayala-Hernández
  • Tania Gómez-Fernández
  • María Dolores Ramírez-González
  • Silvia Ruiz-Velasco
Original Article
  • 84 Downloads

Abstract

Working memory abilities significantly decrease with advancing age; hence, the search for factors that may increase or mitigate this decline is critical. Several factors have been identified that influence working memory; however, their effects have been mainly assessed separately and rarely together with other factors in the same sample. We examined 120 variables to search for factors that jointly act as mediators of working memory decay across the adult life span. A sample of 1652 healthy adults was assessed in spatial and verbal working memory domains. Structural equation modeling analyses were conducted to search for potential mediators that intervened between age and working memory. Only 14 and 10 variables reliably mediated spatial and verbal working memory, respectively. Factors from several domains remained in the models, such as individual characteristics, physiological traits, consumption habits, and regular activities. These factors are sufficiently powerful to influence working memory decline when they jointly interact, as in everyday living.

Keywords

Spatial working memory Verbal working memory Mediators Adult life span Structural equation modeling 

Notes

Funding information

This work was supported by the National Council of Science and Technology (CONACYT) (grant number 238826) and the National Autonomous University of Mexico, General Direction of Academic personal Affairs (DGAPA) (grant numbers IN304202, IN300206, IN300309, ID300312, IG300115, IG300618).

Compliance with ethical standards

All participants provided informed consent and received a monetary reward for his/her participation. The study was approved by the Bioethics Committee of the School of Medicine at the National Autonomous University of Mexico. All experiments were performed in accordance with the Declaration of Helsinki.

Supplementary material

11357_2018_31_MOESM1_ESM.docx (114 kb)
ESM 1 (DOCX 114 kb)

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Copyright information

© American Aging Association 2018

Authors and Affiliations

  • Selene Cansino
    • 1
    Email author
  • Frine Torres-Trejo
    • 1
  • Cinthya Estrada-Manilla
    • 1
  • Joyce Graciela Martínez-Galindo
    • 1
  • Evelia Hernández-Ramos
    • 1
  • Mariana Ayala-Hernández
    • 1
  • Tania Gómez-Fernández
    • 1
  • María Dolores Ramírez-González
    • 2
  • Silvia Ruiz-Velasco
    • 3
  1. 1.Laboratory of NeuroCognition, Faculty of PsychologyNational Autonomous University of MexicoMexico CityMexico
  2. 2.Department of Pharmacology, School of MedicineNational Autonomous University of MexicoMexico CityMexico
  3. 3.Department of Probability and Statistics, Applied Mathematics and Systems Research InstituteNational Autonomous University of MexicoMexico CityMexico

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