Vocational courses and classes are offered by a number of institutions. Many high schools offer basic vocational education, such as home economics, woodshop, and auto repair. Vocational educational institutions vary by state, but most postsecondary vocational instruction is offered by private career schools.
Sigmund Freud of Vienna, who is considered as the father of modern psychology, originated a new method called the Free Association Technique. Freud considered that mind has three parts  the conscious, the pre-conscious and the unconscious. He considered that 90% of the mind is the unconscious mind.
Sigmund Freud (1856-1939) is commonly referred to as the father of psychoanalysis and his work has been tremendously influential in the popular imagination, popularizing such notions as the unconscious, defense mechanisms, Freudian slips and dream symbolism, while also making a long-lasting impact on fields as diverse as literature, film, Marxist and feminist theories, literary criticism, philosophy and psychology.