 A prominent method of assessment of Parental Mentalization is the Parental Development Interview (PDI), a 45-question semi-structured interview, investigating parents’ representations of their children, themselves as parents, and their relationships with their children.An efficient self-report measure of Parental Mentalization is the Parental Reflective Functioning Questionnaire (PRFQ) created by Patrick Luyten and colleagues.The PRFQ is a brief, multidimensional assessment of parental reflective functioning (mentalization), aimed to be easy to administer to parents in a wide range of socioeconomic populations.