Table 2.

Associations Between IIV and DMN-DAN Functional Connectivity

Predictor	Flanker IIV		DCCS IIV		Pattern Comparison Processing Speed IIV
	β	95% CI	β	95% CI	β	95% CI
DMN-DAN Anticorrelation	0.04a	0.02 to 0.06	0.05b	0.02 to 0.07	0.03c	0.01 to 0.05
Age	−0.09b	−0.11 to −0.07	−0.13b	−0.15 to −0.11	−0.08b	−0.11 to −0.06
Sex	0.02	−0.02 to 0.06	0.07a	0.02 to 0.11	0.12b	0.07 to 0.16
Mean FD	0.10b	0.07 to 0.12	0.11b	0.09 to 0.13	0.07b	0.05 to 0.09
Income $50,000–$99,999	−0.23b	−0.29 to −0.17	−0.30b	−0.36 to −0.23	−0.11b	−0.17 to −0.04
Income $100,000+	−0.34b	−0.40 to −0.28	−0.35b	−0.41 to −0.29	−0.15b	−0.22 to −0.09
Non-White	0.19b	0.13 to 0.24	0.17b	0.12 to 0.22	0.12b	0.07 to 0.18
Parental Education	−0.02	−0.04 to 0.00	−0.02	−0.04 to 0.01	−0.00	−0.03 to 0.02

Reference categories: sex (female), income (<$50,000), race/ethnicity (White). Greater magnitude in negative values indicate stronger DMN-DAN anticorrelation.

DAN, dorsal attention network; DCCS, dimensional change card sort; DMN, default mode network; FD, framewise displacement; FDR, false discovery rate; IIV, intraindividual variability.

^ap < .01, FDR corrected.

^bp < .001, FDR corrected.

^cp < .05, FDR corrected.