Psychological Drivers of Alternative Fuel Vehicles’ Adoption and Ecologically Responsible Use

Table 8

Estimates of total indirect effects.

Relationship	Model 1a: original TPB model					Model 1b: extended TPB model
	β	SD	t-value	95% CI LL	95% CI UL	β	SD	t-value	95% CI LL	95% CI UL
Behavioural beliefs⟶eco-social purchase intentions	0.042	0.017	2.541	0.011	0.076	0.018	0.007	2.451	0.006	0.034
Normative injunctive belief⟶eco-social purchase intentions	0.026	0.020	1.282	−0.013	0.067	0.026	0.020	1.290	−0.010	0.068
Normative descriptive belief⟶eco-social purchase intentions	0.107	0.016	6.837	0.079	0.140	0.108	0.015	7.084	0.076	0.136
Control beliefs⟶eco-social purchase intentions	0.002	0.013	0.121	−0.026	0.025	0.002	0.013	0.116	−0.025	0.028
Behavioural beliefs⟶eco-social use intentions	0.116	0.016	7.125	0.088	0.152	0.050	0.009	5.252	0.033	0.070
Normative injunctive belief⟶eco-social use intentions	0.131	0.021	6.128	0.092	0.175	0.130	0.021	6.111	0.089	0.172
Normative descriptive belief⟶eco-social use intentions	0.074	0.014	5.252	0.047	0.101	0.074	0.014	5.224	0.047	0.101
Control beliefs⟶eco-social use intentions	0.041	0.012	3.434	0.018	0.063	0.041	0.012	3.301	0.015	0.065
Behavioural beliefs⟶eco-social conservation intentions	0.098	0.014	6.840	0.073	0.130	0.042	0.008	4.996	0.027	0.060
Normative injunctive belief⟶eco-social conservation intentions	0.153	0.020	7.522	0.115	0.193	0.153	0.020	7.653	0.113	0.190
Normative descriptive belief⟶eco-social conservation intentions	0.072	0.014	5.068	0.046	0.102	0.072	0.014	5.290	0.047	0.099
Control beliefs⟶eco-social conservation intentions	0.063	0.012	5.138	0.042	0.091	0.063	0.013	5.019	0.040	0.089
Altruistic values⟶eco-social purchase intentions	NT	NT	NT	NT	NT	0.038	0.015	2.616	0.012	0.067
Egoistic values⟶eco-social purchase intentions	NT	NT	NT	NT	NT	0.015	0.006	2.436	0.005	0.029
Biospheric values⟶eco-social purchase intentions	NT	NT	NT	NT	NT	0.007	0.004	1.670	0.001	0.018
Altruistic values⟶eco-social use intentions	NT	NT	NT	NT	NT	0.105	0.015	6.839	0.077	0.137
Egoistic values⟶eco-social use intentions	NT	NT	NT	NT	NT	0.040	0.009	4.674	0.025	0.058
Biospheric values⟶eco-social use intentions	NT	NT	NT	NT	NT	0.019	0.008	2.354	0.004	0.036
Altruistic values⟶eco-social conservation intentions	NT	NT	NT	NT	NT	0.088	0.014	6.518	0.064	0.117
Egoistic values⟶eco-social conservation intentions	NT	NT	NT	NT	NT	0.034	0.008	4.234	0.020	0.051
Biospheric values⟶eco-social conservation intentions	NT	NT	NT	NT	NT	0.016	0.007	2.219	0.003	0.032

Note: CI = bias-corrected confidence interval; LL = lower level; UL = upper level; SD = standard deviation; NT = not tested.