Table 3 Correlations among latent factors, reliability and AVE coefficients.

Constructs	Past behavior	Attitude	Subjective norm	PBC	Self-Identity	Intention	Future behavior
Past behavior	0.95
Attitude	0.54 (0.03)	0.72
Subjective norm	0.28 (0.04)	0.34 (0.04)	0.81
PBC	0.69 (0.02)	0.62 (0.03)	0.34 (0.04)	0.76
Self-identity	0.60 (0.03)	0.69 (0.02)	0.38 (0.03)	0.72 (0.02)	0.83
Intention	0.72 (0.02)	0.70 (0.02)	0.34 (0.04)	0.77 (0.02)	0.73 (0.02)	0.88
Future behavior	0.81 (0.01)	0.49 (0.03)	0.26 (0.04)	0.64 (0.03)	0.56 (0.03)	0.68 (0.02)	0.95
Cronbach’s alpha / Spearman’s rho	0.84	0.84	0.84	0.81	0.91	0.89	0.87
AVE	0.90	0.52	0.65	0.57	0.69	0.78	0.91
CR	0.95	0.84	0.85	0.80	0.90	0.91	0.95

Standard errors in parentheses. PBC perceived behavioral control, Future behavior = using a refillable bottle, CR composite reliability, Spearman’s rho was computed for past and future behavior, AVE average variance extracted. The coefficients are all significant with p < 0.001. The square root of the AVE values for each construct is reported in the main diagonal in italics.

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