. Author manuscript; available in PMC: 2017 Jun 23.

Published in final edited form as: Proc Int Driv Symp Hum Factors Driv Assess Train Veh Des. 2015 Jun;2015:422–428. doi: 10.17077/drivingassessment.1604

Table 2.

Bivariate correlations and standardized regression coefficients of domains of cognitive function with correction RTs for lane deviations in no-warn and warn drives

	Correction RT		p-value^a	Std Beta^b	Std Beta^c
Domains of Cognitive Function:	No-warn	Warn		Adjusting for baseline lane keeping ability only	Adjusting for both baseline lane keeping & other cognitive functions
Speed of processing	−.344^*	−.602^**	.028	−.514^**	−.870^**
Visuospatial construction	−.274⁺	−.362^*	.28	−.264⁺	−.017
Memory	−.185	−.362^*	.127	−.292	.071
Executive function	−.277⁺	−.355^*	.305	−.254	.387

Abbrv. Std = Standardized. Listwise N = 45;

⁺

p < .10,

p < .05,

^**

p < .01 or better.

p-values indicate whether the correlations of cognitive functioning with correction RTs were stronger in warn than no-warn drives.

Standardized Betas show the prediction to correction RTs in warn drives from each cognitive functioning domain after adjusting for correction RTs in the no-warn drives (numerator df = 2).

Standardized Betas show the prediction to correction RTs in warn drives after adjusting for both baseline lane keeping and all other cognitive functioning scores (numerator df = 5).