Validation of the big five personality inventory-15 (cbf-pi-15) scale for the portuguese language and example of practical applications in project management

Although the Big Five personality model is recognized for its usefulness in personality assessment and research, its application in project management studies is limited due to proprietary research instruments. These instruments are either expensive or difficult to use due to their lengthy assessments. This article is divided into two parts. Firstly, we validated the 15-item short scale (CBF-PI-15) for Brazil, which was proposed by Zhang, Wang, He, Jie, and Deng (2019), and confirmed its effectiveness for project professionals. Secondly, we presented simple examples of practical applications for project management professionals. We argue that previous research on personality assessment provides opportunities for research with project professionals. We conducted Exploratory and Confirmatory Factor Analyses according to best practices, which resulted in appropriate levels of internal consistency and reliability. Our validation allows for scientific research on projects and is a parsimonious measure of the Big Five personality model, maintaining the five factors of the original proprietary scale. We also provided examples of practical use, which indicated changes in project professionals' behavior through growth and subsequent decrease in openness to experience with increased experience in project management.