State Trait Cheerfulness Inventory (STCI).
The state trait cheerfulness inventory can be either a 18, 30 or 60 item questionnaire regarding feelings and state of mind.
Items are scored on a 1-4 scale, with the total scale score calculated as a sum within the different subsections e.g. trait-cheerfulness (CH).
Auerbach, S., Hofmann, J., Platt, T., & Ruch, W. (2013). An investigation of the emotions elicited by hospital clowns in comparison to circus clowns and nursing staff. The European Journal of Humour Research, 1(3), 26-54.