Table 2.

Correlations of latent mental speed general factor with working memory capacity (WMC) and AB.

Score	WMC	AB
Speed
1/RT	0.62 [0.46;0.78]	−0.22 [−0.39;−0.04]
Response Time
M RT	−0.67 [−0.84;−0.51]	0.22 [0.04;0.40]
M log(RT)	−0.65 [−0.81;−0.49]	0.22 [0.04;0.40]
Mdn RT	−0.66 [−0.83;−0.49]	0.23 [0.04;0.41]
RT Quartiles
Q0.20	−0.59 [−0.77;−0.41]	0.20 [0.01;0.38]
Q0.40	−0.63 [−0.80;−0.46]	0.22 [0.03;0.40]
Q0.60	−0.68 [−0.85;−0.51]	0.23 [0.04;0.41]
Q0.80	−0.69 [−0.86;−0.53]	0.22 [0.03;0.41]
Q1.00	−0.62 [−0.77;−0.47]	0.20 [0.00;0.39]
RT Variability
SD RT	−0.58 [−0.74;−0.42]	0.15 [−0.06;0.35]
log(VRT)	−0.55 [−0.71;−0.39]	0.18 [−0.02;0.38]
IQR	−0.67 [−0.84;−0.51]	0.18 [−0.03;0.39]
Errors
Error Rate	0.07 [−0.17;0.31]	0.04 [−0.14;0.21]
Probit (Error)	0.10 [−0.19;0.38]	0.02 [−0.17;0.20]

Significant relations are printed in boldface. Boundaries of the 95% confidence intervals are given in square brackets.