McGrath RP, Vincent B, Hackney KJ, Robinson-Lane SG, Downer B, Clark BC. The Longitudinal Associations of Handgrip Strength and Cognitive Function in Aging Americans. Journal of the American Medical Directors Association. 2019. doi:https://doi.org/10.1016/j.jamda.2019.08.032.

Díaz-Venegas C, Downer B, Langa KM, Wong R. Cognitive Functioning of U.S. Adults by Race and Hispanic Origin. In: Vega WA, Angel JL, Robledo LMiguel F, Markides KS, eds. Contextualizing Health and Aging in the Americas. Contextualizing Health and Aging in the Americas. Cham: Springer International Publishing; 2018:85 - 107. doi:10.1007/978-3-030-00584-910.1007/978-3-030-00584-9_5.