Scientific?

To which he replied that "serious students of Psychology believe it possible to study behaviour using the methods of science." They would agree that there are other methods for studying behaviour and gave philosophy and literature as two examples. The novelist writes about human behaviour and the philosopher reasons about it on the basis of fixed and given propositions about the nature of human nature. The difference, he said, between Psychology on the one hand and these others on the other hand, is that Psychology in employing methods of scientific investigation is trying to establish generalisations about behaviour that are true in the sense that they can be tested and confirmed by all other persons with the same amount of scientific training and skill.

This seemed to me to be precluding the great theorists like Freud, Jung, James, and I asked him if he intended this. He pointed out that a theorist was working from theories back to theories, but that in between were the cold, hard, stubborn facts they have to match.