TABLE 1.

Overview of the psychometric scales included in the survey.

Scale	Subscales	Response format	Example items	Cronbach’s α
CHIME	Awareness toward internal experiences	6-point Likert scale	When my mood changes, I notice it right away	0.781
	Awareness toward external experiences		I notice details in nature, such as colors, shapes, and textures.	0.832
	Acting with awareness		I break or spill things because I am not paying attention or I am thinking of something else.	0.637
	Accepting and non-judgmental orientation		During both ups and downs of life, I am kind to myself.	0.859
	Decentering and non-reactivity		When I have distressing thoughts or images, I am able to feel calm soon afterward.	0.875
	Openness to experiences		I try to stay busy to avoid specific thoughts or feelings from coming to mind.	0.752
	Relativity of thoughts		It is clear to me that my evaluations of situations and people can easily change.	0.602
	Insightful understanding		In everyday life, I notice when my negative attitudes toward a situation make things worse.	0.771
MTES	Intrinsic motivation	7-point Likert scale	For the pleasure I experience while I am mastering new ways of helping the environment.	0.945
	Integrated motivation		Because taking care of the environment is an integral part of my life.	0.943
	Identified motivation		Because it is a reasonable thing to do to help the environment.	0.961
	Introjected motivation		I think I’d regret not doing something for the environment.	0.905
	External motivation		Because other people will be upset if I don’t.	0.887
	Amotivation		Honestly, I don’t know; I truly have the impression that I’m wasting my time doing things for the environment.	0.888
SHS	None	7-point Likert scale	Some people are generally very happy. They enjoy life regardless of what is going on, getting the most out of everything. To what extent does this characterization describe you?	0.918
CNS	None	5-point Likert scale	I often feel a sense of oneness with the natural world around me	0.890