Table 2.

Bivariate correlations amongst cognitive scores and chronological age.

	Age	COM-Mem	COM-EF	ISD-BP	ISD-Mem
COM-Mem	−0.58**
	n = 41
COM-EF	−0.51**	0.62**
	n = 41	n = 41
ISD-BP	0.15	−0.15	−0.11
	n = 41	n = 41	n = 41
ISD-Mem	0.24	−0.30+	−0.19	0.49**
	n = 40	n = 40	n = 41	n = 45
ISD-EF	−0.13	−0.03	−0.03	0.58**	−0.10
	n = 45	n = 41	n = 40	n = 40	n = 40

Alzheimer’s Disease Neuroimaging Initiative (ADNI) memory (COM-Mem) and executive functioning (COM-EF) scores, without age regressed. Intraindividual standard deviation (ISD) for the broad profile (ISD BP) and within memory (ISD Mem) and executive functioning (ISD EF) domains, with age regressed. **p < 0.001; ⁺p < 0.05, one-tailed.