. Author manuscript; available in PMC: 2011 Aug 9.

Published in final edited form as: J Int Neuropsychol Soc. 2010 May 5;16(4):679–686. doi: 10.1017/S1355617710000470

Table 2.

Bivariate Relationships between Neuropsychological Measures and Total Driving Errors

Test	Raw scores Pearson r	Adjusted scores Pearson r	Z^a
TMT-A	.258^*	.219^*	0.75
TMT-B	.187^†	.152	0.58
CFT	.384^***	.207^†	3.56^***
BVRT	.206^†	.177	0.48
BD	.269^*	.207^†	1.64

Note. TMT-A = Trail Making Test, Trail A; TMT-B = Trail Making Test, Trail B; CFT = Complex Figure Task Copy; BVRT = Benton Visual Retention Test Errors; BD = Wechsler Adult Intelligence Scale-III Block Design Test. For all tests for which lower scores indicate higher functioning, the direction of the correlations was reversed so that a positive correlation always indicates a positive relationship between better neuropsychological performance and better driving performance.

Z tests the statistical significance of the difference between the correlation coefficients associated with raw scores vs. adjusted scores.

^†

p < .10.

p < .05.

^**

p < .01.

^***

p < .001.