Average reply to 13a: "How much do you agree or disagree with this statement? It is just too difficult for someone like me to do much about the environment". (1) Agree strongly, (2) Agree, (3) Neither agree nor disagree, (4) Disagree, (5) Disagree strongly. Replies (8) Can't choose are deleted.

In Environment III (2010) - question 13a.
In Environment II (2000) - question 8a.
In Environment I (1993) - question 9a.

A higher score means that fewer people believe that it is too difficult to do something about the environment as an individual. A lower score means that more people believe that it is too difficult to do something about the environment as an individual.