Purpose: The Stress-Energy Questionnaire (SEQ) is an instrument developed to measure two aspects of mood at work. This study evaluates the discriminant validity of the SEQ when assessments are separated into work and leisure time. Furthermore, the use of the scale categories was explored with...

The study presents three methods which can be used to assess discriminant validity for multi-item scales. Q-sorting is presented as a method that can be used in early stages of research, being more exploratory, while the chi-square difference test and the average variance extracted analysis are...