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Socha, Alan; Cooper, Christopher A.; McCord, David M. – Psychological Assessment, 2010
Goldberg's International Personality Item Pool (IPIP; Goldberg, 1999) provides researchers with public-domain, free-access personality measurement scales that are proxies of well-established published scales. One of the more commonly used IPIP sets employs 50 items to measure the 5 broad domains of the 5-factor model, with 10 items per factor. The…
Descriptors: Construct Validity, Reliability, Personality Measures, Personality