. Author manuscript; available in PMC: 2017 Aug 1.

Published in final edited form as: Transp Res Part F Traffic Psychol Behav. 2016 Jul 5;41(A):124–137. doi: 10.1016/j.trf.2016.06.007

Table 3.

Survey measures by study condition (n = 53)

	# of Items	Range^a	Alpha^b	Total		Risk condition
				Total		Risk- averse (n = 29)		Risk-accepting (n = 24)

				M	SD	M	SD	M^c	SD

Advance Survey
Resistance to peer pressure	10	1-4	0.51	2.60	0.47	2.58	0.53	2.63	0.40
Friends’ approval of risky driving	11	1-5	0.81	2.92	0.63	2.80	0.67	3.07	0.55
Friends’ risk behavior	4	1-5	0.88	2.03	0.84	2.04	0.87	2.03	0.83
Friends’ risky driving	19	1-5	0.86	2.34	0.50	2.35	0.53	2.32	0.47
Driving risk perceptions	24	1-5	0.86	3.66	0.41	3.68	0.42	3.63	0.41

Post Drive Survey
Risk perception of passenger	18	1-5	0.97	2.53	1.16	1.56^*	0.44	3.69^*	0.46
Identification with passenger	6	1-3	0.86	1.77	0.75	1.69	0.81	1.88	0.68
Passenger approval	5	1-5	0.96	2.80	1.39	1.68^*	0.51	4.16^*	0.72
Passenger pressure	10	1-7	0.86	3.25	1.29	2.46^*	1.03	4.22^*	0.84
Sensation Seeking	40	0-40	0.86	18.67	7.17	18.56	7.57	18.65	6.83

Differences are statistically significant.

Higher scores represent greater resistance, approval, and driving risk perceptions.

Standardized Cronbach's alpha coefficients are for the current study.

Independent t-tests were used to conduct the mean comparisons.