Table 2.

Comparison of definitions across 5 categories: “No Pathology”; “Behavioral Preservation”; “Structural Preservation”; “Functional Preservation”; “Social Preservation.”

	Reference	No Pathology	Behavioral Preservation	Structural Preservation	Functional Preservation	Social Preservation
Neuroscience	Hendrie et al. (2006)	x	x			x
	Daffner (2010)	x				x
	Greenwood et al. (2011)		x
	Malaspina et al. (2011)		x	x	x
	Depp et al. (2012)		x
	Dumas (2015)	x	x
	Wallace et al. (2017)	x				x
	Moore et al. (2018)	x
	Stern et al. (2022)	x	x	x	x
Psychology	Harrison et al. (2012)		x
	Smith (2016)	x	x		x
	Silverman and Schmeidler (2018)		x
	Cabeza et al. (2018)		x
	Leal and Yassa (2019)	x
	Oschwald et al. (2020)	x
Gerontology	Massaldjieva (2018)		x			x
	Mendoza-Ruvalcaba et al. (2018)		x			x
	Cadar (2018)		x
	Rowe and Kahn (1987)	x	x
	Clouston et al. (2020)		x