Hypotheses summary and main results of OLS regression for each sample
| Hypothesis | Sample | Effect size [95% CI] (p-value) | Interpretation |
|---|---|---|---|
| H1a: When given an ambiguous risk probability of occurrence (as opposed to a non-ambiguous one), purchasing managers are more likely to choose the more sustainable product option | Purchasing managers | 0.019 [−0.04, 0.07] (ns) | not supported |
| Students | 0.000 [−0.10, 0.10] (ns) | not supported | |
| H1b: The effect in H1a is stronger for females than for males | Purchasing managers | −0.111** [−0.22, −0.00] (0.044) | not supported (statistically significant effect opposite to our hypothesis found) |
| Students | 0.119 [−0.08, 0.31] (ns) | not supported | |
| H2a: When given a specific (as opposed to ambiguous) social consequence associated with the product choice, purchasing managers are more likely to choose the sustainable product option | Purchasing managers | 0.016 [−0.04, 0.07] (ns) | not supported |
| Students | 0.049 [−0.05, 0.15] (ns) | not supported | |
| H2b: The effect in H2a is stronger for males than for females | Purchasing managers | 0.048 [−0.06, 0.16] (ns) | not supported |
| Students | 0.0160 [−0.18, 0.21] (ns) | not supported | |
| Post hoc test: impact of gender on sustainable product selection | Purchasing managers | 0.058 ** [0.03, 0.12] (0.040) | Females in both sample groups chose the sustainable product more often than males |
| Students | 0.102** [0.00, 0.20] (0.034) |
| Hypothesis | Sample | Effect size [95% CI] ( | Interpretation |
|---|---|---|---|
| Purchasing managers | 0.019 [−0.04, 0.07] (ns) | not supported | |
| Students | 0.000 [−0.10, 0.10] (ns) | not supported | |
| Purchasing managers | −0.111** [−0.22, −0.00] (0.044) | not supported (statistically significant effect opposite to our hypothesis found) | |
| Students | 0.119 [−0.08, 0.31] (ns) | not supported | |
| Purchasing managers | 0.016 [−0.04, 0.07] (ns) | not supported | |
| Students | 0.049 [−0.05, 0.15] (ns) | not supported | |
| Purchasing managers | 0.048 [−0.06, 0.16] (ns) | not supported | |
| Students | 0.0160 [−0.18, 0.21] (ns) | not supported | |
| Post hoc test: impact of gender on sustainable product selection | Purchasing managers | 0.058 ** [0.03, 0.12] (0.040) | Females in both sample groups chose the sustainable product more often than males |
| Students | 0.102** [0.00, 0.20] (0.034) |
Note(s): *p-value <0.10; **p-value <0.05; ***p-value <0.01; ****p-value <0.001
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