|A depiction of the seven dominate models of psychology: biological psychology (life theory based), evolutionary psychology (Darwin-based), cognitive psychology (Cartesian-based), humanistic psychology, psychodynamics (Freudian-based), behavioral psychology (Skinner-based), and sociocultural psychology. (Ѻ)|
The thermodynamic study of psychology is called “psychodynamics”, a field generally developed, beginning in the late 1870s, by Austrian psychiatrist Sigmund Freud. 
The following are related quotes:
“The unconscious must be explained physically and chemically and not psychologically, else we allow ‘mystical agents’, arbitrary constructions that can never be verified, to enter science.”— Lev Vygotsky, Historical meaning of the crisis in Psychology (1927)
1. (a) Clark, John O.E. (2004). The Essential Dictionary of Science. New York: Barnes & Noble Books.
(b) Eysenck, Michael W. (2004). Psychology: An International Perspective, (pg. 3). Taylor & Francis.
2. Hall, Calvin, S. (1954). A Primer in Freudian Psychology. Meridian Book.
● Psychology – Wikipedia.