he has developed what he calls “Humanistic Astrology,” a new and modern approach to astrology which is entirely compatible with modern psychological techniques.
Arroyo identifies Rudhyar as the originator of Humanistic Astrology and defines it as a distinctly modern astrological orientation fully consonant with contemporary psychological practice.
, Astrology, Psychology, and the Four Elements: An Energy Approach to Astrology and Its Use in the Counseling Arts, 1975thesis