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387 BCE
Plato discovers the mind is in the brain
The mind was originally thought to be in the stomach, although Aristotle proposed processes came from the heart. -
Patients in hospital are released
Philippe Pinel wanted to find a way to improve conditions for mentally ill patients. He influenced his assistant to free the patients held in Paris. -
Ernst Heinrich Weber
Ernst Heinrich Weber releases his theory of touch, called Weber's Law. -
Phineas Gage
Phineas Gage survives a pole blown through his head. His personality is altered and gives insight into the function of the brain. -
Paul Broca
Paul Broca theorizes that the left frontal lobe is what allows humans to comprehend language. -
First American Psychology Degree is given
Stanley Hall achieves the first degree in psychology in United States history. -
Wilhelm Wundt
Wilhelm Wundt opens the very first psychology lab and begins formal psychological studies. -
Johns Hopkins University
The first psychology lab in America is opened by Johns Hopkins University. -
Sigmund Freud begins research
Sigmund Freud treats patients in the first therapy sessions and begins personality work. -
Psychological Assessments are created
James Cattell describes psychological assessments as "mental tests" and begins to specialize within it. -
Alfred Binet
Alfred Binet opens the world's first psychodiagnosis laboratory in France. -
University of Pennsylvania
The first psychological clinic opens within the halls of the University of Pennsylvania. -
John Watson
John Watson begins research on behavioral psychology. -
Respect is considered
Carl Rogers suggests that kindness and unbiased opinions are critical in the field of clinical psychology. -
Handbook is Written
A reference for mental illness classification is created. This book is called The Diagnostic and Statistical Manual of Mental Disorders. -
Rules are set in place
The American Psychological Association writes the Code of Ethics for Psychologists to ensure the wellbeing of patients. -
On Becoming a Person
On Becoming a Person is written by Carl R Rogers as a statement about how the mentally ill should be treated. -
Alfred Bandura
Alfred Bandura tests the hypothesis of observation on personality and development. -
Howard Gardner
Howard Gardner comes up with the idea of "multiple intelligence," which means that intelligence comes in a wide variety of forms. He also argues that intelligence is not a measure of someone's worth to society. -
American Psychological Society
The American Psychological Society is formed.
