It is true that much communication is non-verbal.
It is also true that that communication represents the internal state of the subject.
Astrology reveals that state.
Here is a quote from Carl Jung, for what it's worth:
"Anyone who wants to know the human psyche will learn next to nothing from experimental psychology. He would be better advised to abandon exact science, put away his scholar's gown, bid farewell to his study, and wander with human heart through the world. There in the horrors of prisons, lunatic asylums and hospitals, in drab suburban pubs, in brothels and gambling-hells, in the salons of the elegant, the Stock Exchanges, socialist meetings, churches, revivalist gatherings and ecstatic sects, through love and hate, through the experience of passion in every form in his own body, he would reap richer stores of knowledge than text-books a foot thick could give him, and he will know how to doctor the sick with a real knowledge of the human soul."
Modern western psychology/psychiatry is simply one system of looking into the human psyche. The system has created certain idiosyncratic perspectives and conceptions, developed a jargon/terminology, invented therapies and even syndromes. I hesitate to accept such a system as the only valid means of addressing the human soul. Western psychology is notably dependent on the individual practicing the art: there is the Freudian school, the Jungians, the Adlerites, the Gestalt crowd, the Pavlovians... Western psychology has not to date defined the characteristics of psychopathy (nor many other conditions); the art is always in a state of flux and seems to change with the seasons. The rate of "cure" for western psychiatry seems to me no higher than that achieved by Alcoholics Anonymous, various spiritual disciplines, or self-therapies. And in its course, the "science" [hence our certified experts] has created a nation of hypochondriac drug addicts. You are welcome to your technocracy; I will side with common sense and the experience of life.