How did the Big Five go from contested research program to textbook standard in a single decade?

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Idiographic versus nomothetic: should the field study one life in depth or thousands of people with statistics? Most personality data comes from WEIRD undergraduates: how much does that limit the science? Psychodynamic ideas keep sneaking into modern research: what is the honest scorecard? The field still cannot agree on what personality is: does the definitional fight actually matter? Mischel's 1968 critique almost split the field: what did the person-situation debate actually settle? Fleeson's density distributions: you change moment to moment yet stay recognizably yourself on average Can dark traits be ordinary parts of personality instead of disorders waiting to happen? The lexical hypothesis: why did personality research start by counting words in a dictionary? Dan McAdams argued traits are only level one: what do personal concerns and life stories add? How do you tell a passing mood from a lasting personality trait?