Adaptation and validation of a quarter-of-life crisis questionnaire - The Developmental Crisis Questionnaire (DCQ-12).

Objectives: The aim of this article is to introduce the Polish adaptation of the Developmental Crisis Questionnaire (DCQ-12). In Poland, there is currently no tool for measuring the quarterlife crisis, hindering empirical exploration and cognitive understanding of this phenomenon. The DCQ-12, developed by Petrov and colleagues, serves as an age-independent measure of adult developmental crisis for research and applied purposes.