Perceived effectiveness of environmental behaviour (a 1⁄4 0.70)
(1) I think if I carry out some pro-environmental behaviours in my everyday life,
I would contribute a lot to our environment
(2) I think my participation in environmental protection would influence my
family and friends to participate too
(3) The environmental quality of HK will stay the same even if I engage in some
pro-environmental behaviours
(4) Even if I recycle and reuse things, the environmental quality of HK will remain
as it currently is (Items 3 and 4 were reverse-coded)