Scores of short and free scale for Big Five explain perceived stress at different stages of life: validity, reliability and measurement invariance of the Polish adaptation of Mini-IPIP

background Big-Five personality traits are related to a variety of quality of life outcomes; therefore, they should arguably be controlled for whenever health and well-being are investigated. Valid and reliable short measures of these constructs may enable large scale epidemiological studies. Stress is a well-recognized risk factor for a host of health-related outcomes and its relationship with Big-Five personality is well-evidenced. The aim of this research was to investigate psychometric properties of the Polish version of the MiniIPIP scale measuring Big Five personality factors. This included measurement invariance between genders and between two samples representing different stages of life – an employee sample and an adolescent sample – and investigating the relationships of Big Five personality traits with perceived stress.