““You’ll also note a chronology to the theories, with later ones tending to supersede earlier ones. It is not, however, an exact timeline; bits and pieces of various theories still hold sway among current thinkers and some older ideas, such as trait theory, have resurfaced with renewed vigour in the light of modern science (genetic studies show that some traits associated with leaders, such as intelligence and extroversion, are highly heritable). One consequence of the chronological approach is that earlier leadership studies tend to focus on political and military figures, whereas the rise of corporate culture in the twentieth century shifts the focus of later theories to leadership in the workplace (which can be termed organisational, management or business psychology). In the corporate sphere, ‘leaders’ and ‘followers’ become ‘managers’ and ‘employees’ or ‘subordinates’.””