The NEO
Explanation and description of the big 5 traits according to the six facet versions of the system.
The NEO PI-R and the IPIP-NEO
The Revised NEO Personality Inventory (NEO PI-R) was developed by Paul Costa and Robert McCrae fr...
Openness (to experience)
Listed below are the facets that comprise the trait Openness according to the IPIP. O1: Imaginat...
Conscientiousness
Listed below are the facets that comprise the trait Conscientiousness according to the IPIP. C1:...
Extraversion
Listed below are the facets that comprise the trait Extraversion according to the IPIP. E1: Frie...
Agreeableness
Listed below are the facets that comprise the trait Agreeableness according to the IPIP. A1: Tru...
Neuroticism
Listed below are the facets that comprise the trait Neuroticism according to the IPIP. N1: Anxie...
NEO Domains
This is a version of the NEO (both are the work of Costa & McCrae) that tries to summarise the bi...