Table 5.

Survey items of the ISSP 2000 used for the exploratory factor analysis

Items	Survey item	Factor
	Willingness to pay items
1	How willing would you be to pay much higher prices in order to protect the environment? (very unwilling – very willing)	1
2	How willing would you be to pay much higher taxes in order to protect the environment? (very unwilling – very willing)
3	How willing would you be to accept cuts in your standard of living in order to protect the environment? (very unwilling – very willing)
	Environmental worry items
4	We worry too much about the future of the environment and not enough about prices and jobs (strongly disagree – strongly agree)	2
5	People worry too much about human progress harming the environment (strongly disagree – strongly agree)
6	Many of the claims about environment threats are exaggerated (strongly disagree – strongly agree)
	Environmental action items
7	Are you a member of any group whose main aim is to preserve or protect the environment? (yes, no)	3
8	In the last five years, have you signed a petition about an environmental issue? (yes, no)
9	In the last five years, have you given money to an environmental group? (yes, no)
10	In the last five years, have you taken part in a protest or demonstration about an environmental issue? (yes, no)

Note: A rotated factor matrix with a threshold of 0.40 was used for the factor classification in 3 categories. The range of answer options is given in parenthesis for each item.