Variable

Description

Mean

Standard

deviation

Minimum

Maximum

BID

Bid offered at 6 different values

68.79

48.36

10

150

EARNINGS

Net family income after tax, divided into 11 intervals, ranging from ? to more than ?000 per month

3.51

1.76

1

11

JOBLESS

Variable indicating the employment situation of the interviewee (unemployed = 1)

0.15

0.36

0

1

NRESOURCES

Dummy variable indicating whether the interviewee totally agrees with the statement: “Natural resources must be conserved regardless of the cost”.

0.48

0.1618

0

1

ENVIRONMENT

Dummy variable indicating whether the interviewee totally agrees with the statement: “We must all make a contribution if we want to protect the environment”.

0.77

0.2366

0

1

CONCERNED

Dummy variable indicating whether the interviewee is concerned by the environment (concerned = 1)

0.71

0.45

0

1

NEWHABITS

Dummy variable indicating whether the interviewee totally agrees with the statement: “I would be willing to change my consumption habits to protect the environment”.

0.50

0.50

0

1

FUSE

Dummy variable indicating the future usage expectations for the drovers’ road (high level of usage = 1)

0.75

0.43

0

1

CITY

Dummy variable indicating weather the interview took place in Valencia or its metropolitan area or not (CITY = 1)

0.49

0.1692

0

1

EXISVAL

Dummy variable indicating whether the interviewee, besides the use value, is also concerned about the existence of this natural resource (existence = 1)

0.47

0.50

0

1

MANAGEMENT

Dummy variable concerning the interviewee’s occupation (white-collar worker = 1)

0.23

0.42

0

1

STUDIES

Dummy variable concerning the interviewee’s education (university-educated = 1)

0.16

0.37

0

1

ADMINISTRATION

Dummy variable indicating whether the interviewee totally agrees with the statement: “Government agencies are carrying out their duty to protect the environment correctly”

0.12

0.32

0

1