Development and validation of the Thai mental well-being scale.

Mental well-being is a state of positive mental health, but there is currently no valid tool for assessing mental well-being in the Thai population. The purpose of this research was to develop and validate a mental well-being scale for Thai people. Data from 2000 Thai citizens were analyzed to explore the structural components of mental well-being. Exploratory factor analysis (n = 1000) was conducted and determined a mental well-being factor structure consisting of three factors: 1) positive emotion and thinking, 2) positive relationship and 3) positive functioning. Confirmatory factor analysis of a validation group (n = 1000) identified 10 items within these three factors of mental well-being. Psychometric analyses supported internal consistency reliability, as well as convergent and discriminant validity of the scale. The findings suggest that the construction of this new mental well-being scale for Thai people is reliable and valid. This scale will be a useful tool for addressing and identifying mental health problems among the Thai population.