Perceptual Control Theory (PCT) is both the name of the theory and the name of a book by William Powers. I have found it immensely interesting and intuitive, a good way of explaining why people take actions that they do. This book definitely takes a spot on my shelf of recommended reading. Buy in on Amazon.
Perceptual Control Theory
A Book Recommendation. This book by William Powers offers a complete basic theory of psychology – and a very interesting one at that.