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Plato suggested that the brain is the mechanism of the mental process.
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Phineas Gage suffered brain damage when an iron pole pierces his brain. His personality was changed but his intellect remained intact suggesting that an area of the brain plays a role in personality.
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G. Stanley Hall received the first American Ph.D in psychology. He later founded the American Psychology Association.
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Wilhelm Wundt founded the first formal laboratory of psychology at the University of Leipzig, marking the forma beginning of the human emotions, behaviors, and cognitions.
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The first lab of Psychology in America was established at Johns Hopkins University by G. Stanley Hall.
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Lighter Witmer opens the first psychological clinic in the United States, focusing on the assessment and treatment of individuals with learning difficulties.
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Max Wertheimer published on perception of movement, marking the beginnings of the Gestalt psychology.
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Prägnanz is presented, a concept referred to as the law of simplicity saying that we tend to perceive complex thins in their most simple form.
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Psychological Corporation launched the first psychological test development company, not only commercializing psychological testing, but allowing testing to take place at offices and clinics rather than only at universities and facilities.
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Mary Whiton Calkins becomes the first female president of the American Psychology Association (APA).
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Electroshock therapy was first used on a human patient.
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The state of Connecticut passed the licensure legislation for psychologists, becoming the first state to recognize psychology as a protected practice oriented profession.
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A study on psychotherapy efficacy was published by Hans Eysenck suggesting that therapy is no more effective than no treatment at all. This prompted an onslaught of outcome studies which have since shown psychotherapy to be an effective treatment for mental illness.
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DMS was published by the American Psychiatric Association marking the beginning of the modern mental illness classification.
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The first doctorate in psychology was awarded from the University of Illinois.
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American Psychological studies established.
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First psychologists prescribe medication through the U.S. Militaries psychopharmacology program.
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Psychology advances to the technical age with the emergence for E-Therapy.
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Martin Seligman becomes president of the APA and elevates Positive Psychology-understanding and promoting well-being, happiness, and positive emotions- to the forefront.
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The first World Happiness Record is releases, assessing the global levels of happiness and well being.
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The Covid-19 pandemic leads to an increased focus on mental heath and well being globally.