Frankl’s brand of therapy is sometimes considered, after Freud’s psychoanalysis and Adler’s individual psychology, to be the third school of Viennese… - Tom Butler-Bowdon

The behaviorist view was that babies — monkey or human — loved their mothers for the milk that they provided, since this satisfied a primary need. But what Harlow had seen with the cloth pads made him wonder whether babies might love their mothers not for their milk only, but because they provided warmth and affection.

Freud believed human beings to be wholly driven by the stirrings of the unconscious mind, but Adler saw us as social beings who create a style of life in response to the environment and to what we feel we lack.

A preference for extraversion (seeing life in terms of the external world) or introversion (greater interest in the inner world of ideas) is independent of your preferences for sensing, thinking, intuition, and feeling.