History & Experimentors

Question 1

Hans Eysenck

Answer 1

German 1916, Theoretical model. Most cited psychologist at a time

Extraversion, Neuroticism, and Psychoticism.

Question 2

Cattell’s Taxomomy

Answer 2

English 1905.

16 primary factors, labeled A, B, and so on. Faced criticism to too many factors and difficult replicating.

Warmth, intelligence, emotional stability, dominance, etc.

Question 3

Leary

Answer 3

Known for LSD experiments.

Known for the circumplex.

Question 4

Wiggins

Answer 4

2 decades after leary. Showed statistical implications of adjacency, bipolarity, and orthogonality. But missed traits like N (Emotional stability)

Question 5

Allport and Odbert 5 factor history

Answer 5

1936

17953 trait terms, 4500 are stable

Question 6

Cattell 5 factor history

Answer 6

1943

Factor analysis of 171 of those stable traits into 35 clusters

Question 7

Fiske 5 factor history

Answer 7

1949

Reduced cattells 35 clusters into 22. Factor analysis resulted 5 factors as we see today.

Question 8

Tupes and Christal 5 factor model

Answer 8

1961

Replicated and confirmed Fiske

Question 9

Norman 5 factor model

Answer 9

Replicated Tupes amd Christal, wrote the review for these big five traits.

Question 10

McCrae and Costa 5 factor model

Answer 10

Confirmed Big 5 through publications, more unified now.