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A HISTORY OF

From ancient Greek philosophers to 20th century psychologists, thistimeline chronicles the early development of personality theory and research.

PART 1

HIPPOCRATES CIRCA 370 B.C.

Hippocrates proposed two axes of temperament which combined to form Four Humours. He bełieved that individual differences in personality and behavior could be explained by humoral variances and imbalances.

PLATO CIRCA 370 B.C

Plato proposed 4 groupings, or what we'd now cali personality types:

ARTISTIC

SENSIBLE

INTUITIYE

REASONING

Aristotle suggested they contributed to one's social order in society.

FRANZ GALL 18TH CENTURY

Gall believed there were 27 brain areas ' that control functions. He believed that i thoughts were rooted in personality.

PHINEAS GAGE 1848

A tamping rod went through the side of Gage's face, all the way through the top of his skuli. The brain damage resulted in numerous changes in his personality. This was one of the first pieces of evidence to suggest that personality is tied to specific brain regions.

SIGMUND FREUD 1923

Freud wrote that the human psyche consists of 3 components:

l.THE ID 2.THE EGO 3.THE SUPER EGO

These control all conscious and unconscious thought and therefore behavior.

CARL JUNG 1930'S

Jung popularized the terms extraversion and intraversion, laying the groundwork for later work in personality type theory.

ABRAHAM MASLOW 40'S-SO’S

Maslow's hierarchy of needs proposed that all of human motivation is driven by fulfilling needs in accordance with the principle of self-actualiza-tion, which States that humans are driven to be the best that they can be.

CARL ROGERS 19S9

Rogers built off the ideas of Maslow, arguing that yes, we all strive to achieve our greatest potential but we do so in different ways according to our personalities.

STAYED TUNED FOR PART 2!
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