Table 1: The evaluation indices for the convergent validity of the TPB according to service providers.

Service providers	Construct	Items	Standard factor loadings	Cronbach's alpha	CR	AVE
Public	Intention	Item 1	0.681	0.814	0.879	0.646
		Item 2	0.834
		Item 3	0.86
		Item 4	0.829
	Attitude towards the behaviour	Item 1	0.749	0.852	0.901	0.695
		Item 2	0.849
		Item 3	0.873
		Item 4	0.857
	Subjective norm	Item 1	0.803	0.901	0.931	0.773
		Item 2	0.894
		Item 3	0.904
		Item 4	0.912
	Behavioural control	Item 1	0.728	0.869	0.9111	0.721
		Item 2	0.872
		Item 3	80.99
		Item 4	0.887
	Past experience	Item 1	0.616	0.844	0.878	0.426
		Item 2	0.745
		Item 3	0.681
		Item 4	0.718
		Item 5	0.683
		Item 6	0.641
		Item 7	0.381
		Item 8	0.473
		Item 9	0.773
		Item 10	0.752
Private	Intention	Item 1	0.642	0.763	0.85	0.588
		Item 2	0.792
		Item 3	0.843
		Item 4	0.776
	Attitude towards the behaviour	Item 1	0.78	0.834	0.89	0.669
		Item 2	0.843
		Item 3	0.854
		Item 4	0.791
	Subjective norm	Item 1	0.86	0.909	0.936	0.785
		Item 2	0.905
		Item 3	0.92
		Item 4	0.858
	Behavioural control	Item 1	0.806	0.808	0.918	0.737
		Item 2	0.899
		Item 3	0.865
		Item 4	0.859
	Past experience	Item 1	0.604	0.814	0.862	0.421
		Item 2	0.718
		Item 3	0.681
		Item 4	0.766
		Item 5	0.743
		Item 6	0.665
		Item 7	0.104
		Item 8	0.508
		Item 9	0.736
		Item 10	0.689
Charity	Intention	Item 1	0.795	0.893	0.927	0.76
		Item 2	0.907
		Item 3	0.913
		Item 4	0.866
	Attitude towards the behaviour	Item 1	0.836	0.89	0.924	0.752
		Item 2	0.878
		Item 3	0.896
		Item 4	0.856
	Subjective norm	Item 1	0.805	0.891	0.925	0.755
		Item 2	0.906
		Item 3	0.891
		Item 4	0.871
	Behavioural control	Item 1	0.911	0.952	0.966	0.875
		Item 2	0.935
		Item 3	0.95
		Item 4	0.945
	Past experience	Item 1	0.727	0.829	0.871	0.439
		Item 2	0.732
		Item 3	0.706
		Item 4	0.784
		Item 5	0.611
		Item 6	0.733
		Item 7	0.097
		Item 8	0.612
		Item 9	0.714
		Item 10	0.637