Psychological well-being in college students: Psychometric properties of the Brief Inventory of Thriving (BIT) and the Comprehensive Inventory of Thriving (CIT)

The purpose of the present study is to investigate the psychometric properties of two integrative inventories of psychological well-being– the Brief Inventory of Thriving (BIT) and the Comprehensive Inventory of Thriving (CIT)– that could be widely used among Turkish young adults. This study also aimed to examine whether students with severe psychological health symptoms reported higher levels of loneliness, lack of control, and negative feelings, and fewer positive domains of the CIT (e.g., support, belonging, positive feelings, and self-efficacy).  The participants of this study included 314 Turkish undergraduate students (76% female with an age range of 18–47 years [M = 22.83, SD = 4.09]) from a state university in Turkey. Confirmatory factor analyses showed good psychometric fit statistics of both the CIT and BIT, confirming the latent structure of inventories. Factor loadings of the CIT items were strong, with robust indicator reliabilities. With regard to the concurrent validity of the measures, the study results showed that the domains and the brief version of the measure had significant correlations with psychological health symptoms. Additionally, individuals with severe mental health symptoms reported fewer positive psychological domains of psychological well-being, whereas having higher negative domains of psychological well-being than those with mild symptoms. Specifically, Cohen's d effect sizes were large for some social resources and subjective well-being domains. Overall, these results provide evidence suggesting that both the CIT and BIT could be used to assess psychological well-being among Turkish young adults.