Mohammad Saleem - Department of Psychology, School of Liberal and Creative Arts (Social Science and Languages), Lovely Professional University, Punjab, India.
Hadia Javaid - Department of Psychology, School of Liberal and Creative Arts (Social Science and Languages), Lovely Professional University, Punjab, India.
Tawsheeba Nisar - Department of Teacher Traning and Non-Formal Education (IASE), Faculty of Education, Jamia Millia Islamia, New Delhi, India.

Objectives: The self-determination theory (SDT) posits that basic psychological needs (BPNs) are indispensable and vital nutrients for well-being. The present research was done to apply SDT to understand students’ well-being, which proposes that the realization and fulfillment of BPNs and subjective vitality significantly influence the overall well-being of an individual. Therefore, the current study analyzed the mediational effect of subjective vitality in the BPN satisfaction and well-being relationship. Methods: This study included a sample of ۲۱۹ (۱۶۵ females and ۵۴ males) university students with a mean age of ۲۵ years. The basic psychological needs satisfaction and frustration scale (BPNSFS) was used to assess BPNs. Subjective vitality was assessed using a ۶-item individual difference version subjective vitality scale by Ryan and Frederick, and well-being was evaluated by the WHO well-being index. Correlational and multiple regression analysis was done and mediational analysis was done using Hayes PROCESS macro. Results: The results indicated that fulfillment of BPNs (β=۰.۴۱۳, P<۰.۰۱) and subjective vitality (β=۰.۲۰۸, P<۰.۰۱) are significant predictors of students› well-being. Mediation analysis showed that subjective vitality completely mediated the relationship between BPN satisfaction and well-being. Furthermore, the measures of BPNS (t=۲.۲۴۲) and well-being (t=۲.۱۵۴) differed significantly, while no significant differences were found in subjective vitality (t=۰.۱۰۸) with respect to gender. Discussion: The findings of this study highlighted the role of BPN satisfaction and subjective vitality in the promotion of students’ well-being. Moreover, the present study highlighted the underlying mechanism, through which BPNs influences students’ well-being. This study contributes to the theoretical literature by emphasizing the vital role played by BPNs and subjective vitality in students’ well-being. Coresponding author: Mohammad Saleem, E-mail: Saleemkashmiruniversity@gmail.com

Personal autonomy, Mediation analysis, Mental health, Personal satisfaction