Hello Amit,

I would suggest you check these articles:

1. The Importance of Self-Determination to Perceived Quality of Life for Youth and Young Adults With Chronic Conditions and Disabilities

or

2. Long-term effectiveness of physical activity promotion among insufficiently active older adults: A Self-Determination and Self-Categorization perspective. 

http://rse.sagepub.com.kuleuven.ezproxy.kuleuven.be/content/31/4/252.full.pdf+html

http://ac.els-cdn.com.kuleuven.ezproxy.kuleuven.be/S0277953615301118/1-s2.0-S0277953615301118-main.pdf?_tid=184da5a6-b042-11e6-9410-00000aacb362&acdnat=1479771040_9452a30be4005fc0c5d1002d393894ef

Dear Amit:

I found the following scale in the Internet. I am attaching a PDF file with this scale and hope that it is useful for your purposes.

Best regards,

Orlando

Dear Amit,

we used Frequency of and Autonomy for Solitary and Interpersonal Behavior Scale (FASIB; Beiswenger 2008) 

Article Loneliness, Emotional Autonomy and Motivation for Solitary B...