When one turns to psychological models of mental illness, one finds that the psychodynamic model of human mind and of mental disease is also of consi… - Thaddeus E. Weckowicz

During that period von Bertalanffy as a young scholar was not only interested in biology and philosophy of science. He was also interested in history and generally in humanities. He studied Oswald Spengler's theory of history and has written a paper on this topic. His interest in Spengler's theory of history anticipated von Bertalanffy's lifelong attempts to reconcile sciences with humanities.

There are two kinds of thinkers, scholars and scientists. The first are the 'trail blazers' who propose new revolutionary ideas, point to new directions for scientific and intellectual developments, create new paradigms of science and scholarship, but leave the details to others. The second are those who follow the new trail, carry out careful experimentation and research within the established paradigm, and work out the precise formulations of theories in a particular domain of knowledge.

The second model is the functionalist model of mind. The organism through acquired S-R responses or through operations on the environmental manages to stay alive and adjust itself to the environment. The Thorndykian and Skinnerian approaches to learning and the adaptive model of the psychoanalytical theory come under this heading.