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Summary of the psychometric properties of the HWDN, HWP and HWIN scales
| Scale items | Scale reliability (ρ) | Scale reliability (α) |
| HWDN (2 items) | 0.74 | 0.88* |
| HWP (2 items) | 0.63 | 0.78* |
| HWIN (3 items) | – | 0.83 |
*Alphas computed for comparison purposes.
HWDN, handwashing descriptive norms; HWIN, handwashing injunctive norms; HWP, handwashing behaviour publicness.
