Impact of External Cue Validity on Driving Performance in Parkinson's Disease

Table 3

Correlations between driving performance variables and Trail Making Test scores (part B and B-A).

Driving performance measures	Trails B		Trails B-A
	PD	Control	PD	Control
Valid Cues	.288	.581**	.197	.379
Braking Point (m)
Invalid Cues	.606**	.592**	.524*	.435
Braking Point (m)
No Cues	−.152	.373	−.163	.211
Braking Point (m)
Valid Cues	−.092	−.541*	−.014	−.357
Deceleration to Brake
Point Distance (m)
Invalid Cues	−.399	−.432	−.337	−.281
Deceleration to Brake
Point Distance (m)
No Cues	.414	−.215	.351	−.071
Deceleration to Brake
Point Distance (m)

*Sig 0.05. **Sig 0.01.