free, the psychological consequences of interference with be­ havioural freedoms, and to a lesser extent, how it feels to feel free. Empirical fmdings on each of these facets of human freedom have arisen in quite separate research traditions, and they are brought together here for the first time. During the same twenty years, a general critique of the dominant positivist natural science approach to complex human phenomena has been growing. Although it has escalated recently, this critique has fIrm roots that go back to the turn of the century. I review this general critique and apply it specifically to the study of human freedom - surely a complex human phenomenon, more complex, ambiguous, and paradoxical than most of us im­ agine.