2.5. Subjective Happiness Scale (SHS)
The subjective happiness scale is a 4-item questionnaire that can be used to discern happy and unhappy tendencies. This assessment asked subjects to report how happy they feel in general, how happy they consider themselves compared to most of their peers, to what extent they enjoy life regardless of what is going on, getting the most out of everything, and how unhappy they are. The reliability and validity have been established previously [