Well-being has gained importance in psychological research as well as in the field of education. However. there is a lack of validated questionnaires in Slovenia that would measure well-being in different domains in childhood and youth. In the present paper we focused on psychometric properties of two children and adolescent well-being measures: Middle Years Development Instrument (MD... https://www.roneverhart.com/Doorking-1835-080-Telephone-Entry-System/