The Connectedness to Nature Scale (CNS) measures to what degree people feel part of nature (Mayer & McPherson Frantz, 2004). The study shows that this is a personality trait. This trait is predictive of responsible environmental behavior and subjective wellbeing.
In a sample of 60 people (31 male, 29 female) from 18 to 68 years old Americans in Oberlin (Ohio) participated. The participants had a variety of occupations, although they were higher educated than the average American population. The average score in this sample was 3.65 (out of a range from 1 to 5).