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

Table 5

Estimates of direct effects.

Relationship	Model 1a: original TPB model (SRMR = 0.035)							Model 1b: extended TPB model (SRMR = 0.031)
	β	SD	t-value	R^2	95% CI LL	95% CI UL	f^2	β	SD	t-value	R^2	95% CI LL	95% CI LL	f^2
Behavioural beliefs⟶attitude towards behaviour	0.446	0.026	17.209	0.267	0.392	0.494	0.249	0.171	0.028	6.117	0.430	0.114	0.228	0.037
Biospheric values⟶attitude towards behaviour	NT	NT	NT		NT	NT	NT	0.041	0.031	1.325		−0.022	0.100	0.002^ns
Altruistic values⟶attitude towards behaviour	NT	NT	NT		NT	NT	NT	0.316	0.032	9.948		0.251	0.376	0.098
Egoistic values⟶attitude towards behaviour	NT	NT	NT		NT	NT	NT	0.126	0.029	4.310		0.072	0.182	0.019
Normative injunctive beliefs⟶subjective injunctive norms	0.617	0.019	32.545	0.381	0.578	0.653	0.616	0.617	0.018	33.886	0.381	0.578	0.651	0.616
Normative descriptive beliefs⟶subjective descriptive norms	0.438	0.027	16.307	0.192	0.382	0.488	0.238	0.438	0.025	17.353	0.192	0.380	0.484	0.238
Control beliefs⟶perceived behavioural control	0.330	0.026	12.458	0.222	0.278	0.383	0.141	0.471	0.023	20.537	0.222	0.427	0.516	0.285
Attitude towards behaviour⟶eco-social purchase intention	0.095	0.036	2.609	0.106	0.025	0.167	0.006 ^ns	0.079	0.040	2.010	0.127	0.013	0.163	0.004^ns
Subjective injunctive norms⟶eco-social purchase intention	0.042	0.032	1.290		−0.022	0.109	0.001 ^ns	0.041	0.033	1.229		−0.026	0.105	0.001^ns
Subjective descriptive norms⟶eco-social purchase intention	0.245	0.034	7.248		0.179	0.312	0.044	0.230	0.034	6.783		0.164	0.296	0.040
Perceived behavioural control⟶eco-social purchase intention	0.005	0.039	0.121		−0.077	0.074	0.000 ^ns	−0.020	0.042	0.482		−0.095	0.063	0.000^ns
Biospheric values⟶eco-social purchase intention	NT	NT	NT		NT	NT	NT	0.114	0.035	3.263		0.044	0.179	0.010 ^ns
Altruistic values⟶eco-social purchase intention	NT	NT	NT		NT	NT	NT	−0.076	0.035	2.181		−0.149	0.013	0.004^ns
Egoistic values⟶eco-social purchase intention	NT	NT	NT		NT	NT	NT	0.090	0.035	2.542		0.020	0.158	0.006^ns
Attitude towards behaviour⟶eco-social use intention	0.260	0.031	8.433	0.364	0.200	0.319	0.068	0.167	0.031	5.449	0.399	0.111	0.230	0.026
Subjective injunctive norms⟶eco-social use intention	0.211	0.031	6.612		0.153	0.275	0.044	0.154	0.034	4.594		0.087	0.218	0.023
Subjective descriptive norms⟶eco-social use intention	0.168	0.029	5.750		0.111	0.223	0.029	0.155	0.031	5.086		0.098	0.212	0.026
Perceived behavioural control⟶eco-social use intention	0.124	0.035	3.506		0.052	0.189	0.013^ns	0.072	0.040	1.823		−0.006	0.151	0.004^ns
Biospheric values⟶eco-social use intention	NT	NT	NT		NT	NT	NT	0.011	0.031	0.360		−0.048	0.071	0.000^ns
Altruistic values⟶eco-social use intention	NT	NT	NT		NT	NT	NT	0.228	0.038	6.082		0.155	0.302	0.047
Egoistic values⟶eco-social use intention	NT	NT	NT		NT	NT	NT	0.048	0.028	1.720		−0.005	0.104	0.003^ns
Attitude towards behaviour⟶eco-social conservation intention	0.219	0.028	7.956	0.425	0.165	0.276	0.054	0.151	0.029	5.269	0.449	0.099	0.207	0.023
Subjective injunctive norms⟶eco-social conservation intention	0.248	0.031	8.051		0.188	0.308	0.067	0.210	0.033	6.416		0.139	0.272	0.047
Subjective descriptive norms⟶eco-social conservation intention	0.164	0.030	5.414		0.105	0.222	0.031	0.149	0.029	5.207		0.092	0.206	0.026
Perceived behavioural control⟶eco-social conservation intention	0.192	0.033	5.887		0.133	0.255	0.035	0.142	0.033	4.334		0.078	0.207	0.019
Biospheric values⟶eco-social conservation intention	NT	NT	NT		NT	NT	NT	0.077	0.028	2.754		0.023	0.132	0.007^ns
Altruistic values⟶eco-social conservation intention	NT	NT	NT		NT	NT	NT	0.107	0.029	3.693		0.045	0.160	0.011^ns
Egoistic values⟶eco-social conservation intention	NT	NT	NT		NT	NT	NT	0.076	0.028	2.715		0.020	0.133	0.007^ns
Religiosity⟶attitude towards behaviour	NT	NT	NT		NT	NT	NT	0.117	0.035	3.332		0.045	0.185	0.012^ns

Note:  < 0.01 and  < 0.05; CI = bias-corrected confidence interval; LL = lower level; UL = upper level; SD = standard deviation; ns = not significant; NT = not tested. Effect size impact indicators are according to Cohen 93, 97, 96 and Chin [94, 98, 97]; f² values: 0.35 (large), 0.15 (medium), and 0.02 (small); Q² = (1-SSE/SSO). Q² values: eco-social Use Intentions = 0.256; Eco-social conservation intentions = 0.342; eco-social purchase intentions = 0.087; ESCCB = 0.239.