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.
Piagetâs Stages of Cognitive Development: Experiments with Kids. Gwen Sharp, PhD on September 15, 2009. Jean Piaget, a psychologist who published his most influential works from the late 1920s through the 1950s, is most known for his theory of stages of cognitive development.