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387 BCE
Plato
suggested the brain is the mechanism of mental processes -
Franz Gall
wrote about phrenology - a person's skull and bumps on the head can reveal personality traits - -
Sir Francis Galton
publishes the book Hereditary Genius, arguing that
intellectual abilities are biological in nature. -
Wilhelm Wundt
founded the first laboratory of Psychology at the University of Leipzig, marking the beginning of the study of human emotions, behaviors, and cognitions. -
Sir Francis Galton
developed the correlation tecnique to understand the interrelationships in his intelligence studies. -
William James
published ‘Principles of Psychology,’ that later became the foundation for functionalism. -
John Dewey
writings began the school of thought known as functionalism. -
Edward Thorndike
developed the ‘Law of Effect,’ arguing that “a stimulus-response chain is strengthened if the outcome
of that chain is positive.” -
Sigmund Freud
published ‘Interpretation of Dreams’ marking the beginning of Psychoanalytic Thought. -
Edward Thorndike
published first article on animal intelligence leading to the theory of Operant Conditioning -
William Stern
developed the formula for the Intelligence Quotient (IQ) after studying the scores on Binet’s
intelligence test -
Egas Moniz
published his work on frontal lobotomies as a treatment for mental illness. -
Electroshock
therapy was first used on a human patient -
Carl Rogers
published ‘Counseling and Psychotherapy’ suggesting that respect and a non-judgmental approach to therapy is the foundation for effective treatment of mental health issues -
B.F. Skinner
outlined behavioral therapy, lending support for behavioral psychology via research in the literature. -
Abraham Maslow
helped to found Humanistic Psychology and later developed his famous Hierarchy of Needs -
Howard Gardner
introduced his theory of multiple intelligence, arguing that intelligence
is something to be used to improve lives not to measure and quantify human beings -
Emergence of managed care
prompts the APA to become more political, leading to the idea of Prescribing Psychologists and equity in mental health coverage