This data set comprises of scores of 8,954 psychology freshmen from the University of Amsterdam (1982-2007) on the ‘Vijf PersoonlijkheidsFactoren Test’ or 5PFT developed by Elshout and Akkerman, which is an instrument to measure the Big Five personality factors Extraversion, Agreeableness, Conscientiousness, Neuroticism, and Openness to Experience. Data were collected during the yearly freshmen-testing program from 1982-2007 and include scores at the level of 70 items that can be used in studies of psychometrics and the nature of personality.
Smits, I. A. M., Dolan, C., Vorst, H. C. M., Wicherts, J. M., & Timmerman, M. E. (2013). Data from "Cohort differences in big five personality factors over a period of 25 years". Journal of Open Psychology Data, 1(1). https://doi.org/10.5334/jopd.e2