The study of the human mind had a watershed in the definition of its theoretical constructs with the work developed by the neurologist Sigmund Freud, who created psychoanalysis, starting the publication of his psychological works in 1886, with pre-psychoanalytic studies. The so-called experimental psychology began in 1879, with the construction of a laboratory dedicated to the subject, created by Wilhelm Wundt, in Leipzig, Germany. At the end of the 1880s, Hugo Münsterberg published work on industrial psychology, which was a reference in its time. Several psychologists, psychoanalysts and psychiatrists have succeeded over the years, expanding research into the human psychism over the time. This ebook deals with subjects related to the study of the human mind, in the search for greater clarification on the proposed themes, among them middle age, male and female models of life, logic, perception and emotion, personality, social attitudes, defense x repression, dreams, among others.