How Do Cognitive Interventions Impact Driver Aggressiveness in China?—A Driving Simulator Study

Table 4

Summary of the T-test results.

Dependent variable	T-test	Gp 1	Gp 2	Gp 3	Gp 4	Gp 5	Gp 6
Mean speed in 40 km/h zone	T value	1.146	1.101	2.735	1.588	1.902	1.851
	value	0.288	0.297	0.023	0.151	0.096	0.085
	Cohen’s d	0.573	0.549	1.368	0.794	0.952	0.925
Distance ratio of overspeed in 40 km/h zone	T value	0.484	0.833	1.477	1.883	1.531	2.029
	value	0.636	0.420	0.162	0.081	0.148	0.062
	Cohen’s d	0.230	0.421	0.760	0.930	0.775	1.006
Mean speed in 80 km/h zone	T value	0.086	−0.144	0.753	0.054	0.819	0.689
	value	0.933	0.888	0.464	0.958	0.426	0.502
	Cohen’s d	0.043	0.072	0.377	0.027	0.409	0.345
Distance ratio of overspeed in 80 km/h zone	T value	0.066	0.701	1.236	0.129	0.964	2.104
	value	0.949	0.495	0.237	0.899	0.351	0.072
	Cohen’s d	0.036	0.359	0.621	0.103	0.526	1.053
Mean speed when passing pedestrians	T value	−0.218	−0.844	1.629	−0.067	0.718	0.747
	value	0.830	0.413	0.126	0.948	0.484	0.467
	Cohen’s d	0.110	0.422	0.815	0.033	0.329	0.373
Mean speed at intersection	T value	−1.745	−0.047	0.444	0.148	2.549	0.694
	value	0.103	0.964	0.664	0.884	0.030	0.499
	Cohen’s d	0.873	0.023	0.222	0.074	1.274	0.347
Mean speed on the whole drive	T value	−0.456	−0.169	1.098	0.405	2.374	1.638
	value	0.655	0.869	0.291	0.691	0.032	0.124
	Cohen’s d	0.227	0.084	0.549	0.205	1.187	0.820

Significant effects are shown in bold.