Fig. 8From: Spatial navigation ability is associated with the assessment of smoothness of driving during changing lanes in older driversCorrelations between the mean value of RMSΔ3 and the CPT-B in a older group and b young group. There were significant negative correlations between the RMSΔ 3 score and CPT-B score within both the older group and young group. RMSΔ3, root mean square of the third differentiation; CPT-B, The Card-Placing Test Part BBack to article page