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J Epidemiol Community Health doi:10.1136/jech.2010.128116
  • Research report

Cognitive function in the community setting: the neighbourhood as a source of ‘cognitive reserve’?

  1. Kenneth M Langa1,5,6
  1. 1Institute for Social Research, University of Michigan, Ann Arbor, Michigan, USA
  2. 2Center on Biodemography and Population Health, University of Southern California, Los Angeles, California, USA
  3. 3Department of Sociology, University of Michigan, Ann Arbor, Michigan, USA
  4. 4Ford School of Public Policy, University of Michigan, Ann Arbor, Michigan, USA
  5. 5Division of General Medicine, Department of Medicine, University of Michigan, Ann Arbor, Michigan, USA
  6. 6Veterans Affairs Center for Practice Management and Outcomes Research, Ann Arbor, Michigan, USA
  1. Correspondence to Philippa Clarke, Institute for Social Research, University of Michigan, 426 Thompson Street, Ann Arbor, MI 48104, USA; pjclarke{at}umich.edu
  1. Contributors PJC conceived the paper, conducted the analysis, interpreted the data, drafted the article, and provided final approval of the version to be published. JAA and JSH assisted with the conceptualisation of the paper, contributed substantially to the acquisition and interpretation of the data, and the revision of the article for important intellectual content, and approved the version to be published. JDM, KK and RM contributed to the acquisition and interpretation of data, critically revising the article for important intellectual content, and approved the final version to be published. KML contributed to the analysis and interpretation of data, critically revising the article for important intellectual content, and approved the final version to be published.

  • Accepted 30 March 2011
  • Published Online First 22 April 2011

Abstract

Background Existing research has found a positive association between cognitive function and residence in a socioeconomically advantaged neighbourhood. Yet, the mechanisms underlying this relationship have not been empirically investigated.

Objective To test the hypothesis that neighbourhood socioeconomic structure is related to cognitive function partly through the availability of neighbourhood physical and social resources (eg, recreational facilities, community centres and libraries), which promote cognitively beneficial activities such as exercise and social integration.

Methods Using data from a representative survey of community-dwelling adults in the city of Chicago (N=949 adults aged 50 and over), cognitive function was assessed with a modified version of the Telephone Interview for Cognitive Status instrument. Neighbourhood socioeconomic structure was derived from US census indicators. Systematic social observation was used to directly document the presence of neighbourhood resources on the blocks surrounding each respondent's residence.

Results Using multilevel linear regression, residence in an affluent neighbourhood had a net positive effect on cognitive function after adjusting for individual risk factors. For white respondents, the effects of neighbourhood affluence operated in part through a greater density of institutional resources (eg, community centres) that promote cognitively beneficial activities such as physical activity. Stable residence in an elderly neighbourhood was associated with higher cognitive function (potentially due to greater opportunities for social interaction with peers), but long term exposure to such neighbourhoods was negatively related to cognition.

Conclusions Neighbourhood resources have the potential to promote ‘cognitive reserve’ for adults who are ageing in place in an urban setting.

Footnotes

  • The contents of this paper are solely the responsibility of the authors and do not necessarily represent the official views of the sponsors. An earlier version of this paper was presented at the Annual Meeting of the Gerontological Society of America, Atlanta, Georgia, November 2009.

  • Funding This study was funded by the National Institutes of Health NIH/NICHHD Grant RO1HD050467. PJC was supported by the Centers for Disease Control and Prevention (Grant Number K01EH000286-01). KML was supported by NIH/NIA Grant R01 AG027010.

  • Competing interests None.

  • Ethics approval This study was conducted with the approval of the University of Michigan IRB.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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