The personality tests known as Myers-Briggs Type Indicator (MBTI) were developed based on theories of which scientist?

Question

What theory, developed by Franz Joseph Gall, in which personality traits were determined by "reading" bumps and fissures in the skull, was once considered a science?

Answer 1

Carl Jung
Carl Gustav Jung was a Swiss psychiatrist and psychoanalyst who founded analytical psychology. Jung's work was influential in the fields of psychiatry, anthropology, archaeology, literature, philosophy, and religious studies. Jung worked as a research scientist at the famous Burghölzli hospital, under Eugen Bleuler.