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387 BCE
Plato makes a discovery
Plato suggested that the brain is the mechanism of mental process. -
335 BCE
Aristotle challenges Plato
Aristotle suggested that the heart is the mechanism to mental process. -
Period: 300 BCE to
Psychology
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Franz Mesmer studies mental illness
Franz Mesmer detailed his cure for some mental illness, originally called mesmerism, now called hypnosis. -
First massive movement for the human treatment of the mentally ill.
Philippe Pinel released the first mental patients from confinement in the first massive movement for the humane treatment of the mentally ill. -
Phrenology
Franz Gal wrote about phrenology which was the idea that a persons skull shape and placement of bumps on the head can reveal personality traits. -
Phineas Gage suffers brain damage
Phineas Gage suffers 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 lays a role in personality. -
On the Origin of Species
Charles Darwin publishes On the Origin of Species detailing his view of evolution and expanding on the theory of "survival of the fittest." -
left frontal lobe
French physician, Paul Broca, discovered an area in the left frontal lobe that plays a key role in language development. -
first formal laboratory of psychology
Wilhelm Wundt founded the first formal laboratory of psychology at the University of Leipzig,marking the formal beginning of the study of human behavior, emotions and cognition's. -
First laboratory in America
The first laboratory in America is established at John Hopkins University. -
Nonsense Syllable
Herman Ebbinghaus introduced the nonsense syllable as a means to study memory processes. -
Beginning of Therapy
Sigmund Freud began performing therapy in Vienna, marking the beginning of personality theory. -
mental tests
The term “Mental Tests” was coined by James Cattell, beginning the specialization in psychology now known as psychological assessment -
Principles of Pyschology
William James published ‘Principles of Psychology,’ that later became the foundation for functionalism. -
American Psychological Association
Foundation of the American Psychological Association (APA) headed by G. Stanley Hall, with an initial membership of 42. -
Psychodiagnosis
Alfred Binet founded the first laboratory of psychodiagnosis. -
Functionalism
Writings by John Dewey began the school of thought known as functionalism. -
clinical psychology
The first psychological clinic was developed at the University of Pennsylvania marking the birth of clinical psychology. -
British Psychological Society
The British Psychological Society was founded. -
Abnormal Psychology
The Journal of Abnormal Psychology was founded by Morton Prince.