The International Personality Item Pool (IPIP) is a
public domain
The public domain (PD) consists of all the creative work to which no exclusive intellectual property rights apply. Those rights may have expired, been forfeited, expressly waived, or may be inapplicable. Because those rights have expired ...
collection of items for use in
personality tests
A personality test is a method of assessing human personality constructs. Most personality assessment instruments (despite being loosely referred to as "personality tests") are in fact introspective (i.e., subjective) self-report questionnaire ( ...
. It is managed by the
Oregon Research Institute.
The pool contains 3,329 items. These items make up more than 250 inventories that measure a variety of personality factors, many of which correlate well to better-known systems such as the
16PF Questionnaire and the
Big Five personality traits
The Big Five personality traits is a suggested taxonomy, or grouping, for personality traits, developed from the 1980s onward in psychological trait theory.
Starting in the 1990s, the theory identified five factors by labels, for the US English ...
. IPIP provides journal citations to trace those inventories back to the publication as well as correlation tables between questions of the same factor and between results from different inventories for comparison. Scoring keys that mention the items used for a test are given in a list form; they can be formatted into questionnaires.
Many broad-bandwidth personality inventories (e.g., MMPI, NEO-PI) are proprietary. As a result, researchers cannot freely deploy those instruments and, thus, cannot contribute to further instrument development.
[ ationale for the IPIP https://web.archive.org/web/20050313001046/http://ipip.ori.org/newRationale.htm/ref> An additional problem is that these proprietary instruments are rarely revised, with some having items that are dated.]NEO-PI-R
The Revised NEO Personality Inventory (NEO PI-R) is a personality inventory that assesses an individual on five dimensions of personality, the so-called Big Five personality traits. These traits are openness to experience, conscientiousness, ext ...
test. The site is hosted by John A. Johnson, the author of the shorter equivalent inventory. The longer equivalent from 1999 was created by Lewis Goldberg
Lewis R. Goldberg is an American personality psychologist and a professor emeritus at the University of Oregon. He is closely associated
Goldberg, L.R. (1993). The structure of phenotypic personality traits. ''American Psychologist, 48'',
...
who also created IPIP.
* Open Source Psychometrics Project hosts Goldberg's 50-question version of the Big Five traits and an IPIP emulation of the 16PF questionnaire.[{{cite web , title=Take a personality test - Open Source Psychometrics Project , url=https://openpsychometrics.org/ , accessdate=6 March 2019]
References
External links
International Personality Item Pool website
Personality tests