If psychic reality were in fact of the same ontological type as nature, then psychology, carried out rigorously and precisely as a science, would indeed have to look just like a natural science. It would have to be a science of purely inductive interconnections and a fundamentally different way of [treating] those interconnections that are merely entwined with the inductive ones—and hence an essentially different methodological approach to psychological research and theory—would be excluded on grounds of principle.