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Internal consistency
| Variables | Number of items | Alpha coefficients (Cronbach) |
|---|---|---|
| (n = 251) | ||
| Intention (I) | 4 | .91a |
| Attitude (Aact) | 4 | .93a |
| Behavioural beliefs (b) | 6 | .91 |
| Subjective norm (SN) | 3 | .88a |
| Normative beliefs (nb) | 8 | .81 |
| Perceived behavioural control (PBC) | 3 | .73a |
| Facilitating factors (FF) | 8 | .84 |
| Barriers (BARR) | 3 | .84 |
| Personal normative beliefs (PNB) | 3 | .73 |
| Self-identity (SI)b | 8 | .67 |
aAdjustment for semantic differentiation scales; bn = 250.
