Table 2.

Spearman Correlations Between Dependent and Demographic Variables and Mean values.

Measure	Aerobic fitness	Age	Mother's education	Pubertal timing	Mean (SE)
FLANKER
Congruent RT	−0.113**	−0.222**	0.043	−0.169**	450 (2.3)
Incongruent RT	−0.126**	−0.211**	0.051	−0.157**	543 (3.2)
Congruent acc	0.099*	0.192**	0.081	0.032	95.6 (0.3)
Incongruent acc	0.079	0.208**	0.059	−0.011	81.7 (0.6)
Interference RT	−0.077	−0.084*	0.035	−0.058	93.4 (1.8)
Interference acc	−0.039	−0.146**	−0.025	0.034	13.9 (0.4)
Congruent drift	0.138**	0.297**	0.048	0.078	0.373 (0.005)
Incongruent drift	0.112**	0.296**	0.059	0.048	0.202 (0.004)
Congruent boundary separation	0.000	0.065	0.033	0.034	0.110 (0.001)
Incongruent boundary separation	−0.074	−0.144**	0.049	−0.125**	0.089 (0.001)
Congruent nondecision time	−0.029	−0.076	0.055	−0.166**	0.302 (0.002
Incongruent nondecision time	0.003	0.059	0.024	−0.010	0.379 (0.003)
SWITCH
Homogeneous RT	−0.147**	−0.169**	0.044	−0.137**	458 (3.1)
Homogeneous acc	0.022	0.178**	0.060	−0.001	90.7 (0.3)
Non-switch RT	0.044	−0.088*	0.064	−0.148**	949 (11.7)
Switch RT	0.066	−0.052	0.070	−0.116**	1,146 (16.0)
Non-switch acc	0.193**	0.186**	0.053	0.041	81.0 (0.6)
Switch acc	0.214**	0.216**	0.080	0.035	75.9 (0.6)
Global switch cost RT	0.100*	−0.031	0.063	−0.111*	587 (12.5)
Local switch cost RT	0.072	0.027	0.049	−0.016	196 (7.6)
Global switch cost acc	−0.221**	−0.122**	−0.040	−0.045	12.4 (0.5)
Local switch cost acc	−0.048	−0.063	−0.048	0.007	5.1 (0.4)
Non-switch drift	0.179**	0.221**	0.042	0.096*	0.099 (0.002)
Switch drift	0.208**	0.254**	0.043	0.071	0.078 (0.002)
Non-switch boundary separation	0.120**	0.055	0.073	−0.057	0.169 (0.002)
Switch boundary separation	0.066	0.048	0.042	−0.047	0.165 (0.002)
Non-switch nondecision time	0.018	−0.096*	0.033	−0.112**	0.372 (0.006)
Switch nondecision time	0.113**	−0.009	0.065	−0.098*	0.556 (0.010)

^*p < 0.05.

^**p < 0.01.