Physiology is the scientific study of the functions and mechanisms which work within a living system [0]. It has nothing to do with social sciences or psychology.

That said, social sciences are integral to understanding how this world works and how we can improve, and are in no way inferior to "pure/traditional" sciences.

[0]: https://en.wikipedia.org/wiki/Physiology

Where does psychology come into play here? I don't see it mentioned anywhere in the article.