No

Construct

Adaptation Sources

Subconstruct

Examples of Items

1.

Environmental volunteering values

(25 items)

Constructed by the researchers based on the theory of environmental values by Schwartz (2012) and Stern (2000) .

Egoistic

I participate in volunteering activities in my spare time

Altruistic

I participate in volunteering activities because I want to serve the community

Biospheric

I participate in volunteering activities due to awareness of environmental conservation

Religious

I participate in volunteering activities to practice the religious value of environmental conservation