Instrumental leadership: Measurement and extension of transformational–transactional leadership theory

Leaders must scan the internal and external environment, chart strategic and task objectives, and provide performance feedback. These instrumental leadership (IL) functions go beyond the motivational and quid-pro quo leader behaviors that comprise the full-range—transformational, transactional, and laissez faire—leadership model. In four studies we examined the construct validity of IL. We found evidence for a four-factor IL model that was...