How Households Adopt Sustainable Innovations? A Free Decision Enforced by Others

Table 3

Estimated Choice Models.

	Model I: Insulation	Model II: Solar thermal energy	Model III; E-mobility
Technical interest
Estimate	-.05	.17	.68
Std. Error	.24	.06	.12
t	-.90	2.68	5.47
Investment-relevant knowledge
Estimate	-.16	.30	-.08
Std. Error	.10	.15	.07
t	-1.65	1.95	-1.20
Eco-social value orientation
Estimate	.23	.09	-.13
Std. Error	.08	.08	.14
t	2.77	1.11	-1.00
Social norms
Estimate	.29	.31	.74
Std. Error	.05	.05	.08
t	6.22	6.40	8.85
n	233	232	227
df	3946	3929	1329
Log Likelihood	-5439.2	-5369.4	-1597.1

Note. p<0.05, p < .001.
n = sample size as in number of participants, Estimate = value calculated for increasing investment probability if given variable value increases accordingly, Std. Error = standardized error estimate for standard deviation, t = t value in two-sided test in single group, and df = degrees of freedom.