Reference values regarding youth psychopathic traits inventory in young population

• Published in: Personality and individual differences Vol. 203; p. 112001
• Main Authors: Ramião, Eduarda, Figueiredo, Patrícia, Moreira, Diana, Azeredo, Andreia, Barroso, Ricardo, Barbosa, Fernando
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.03.2023
• Subjects: Adolescent; Psychopathy; Young adults; YPI; II; CU; YPI; Young adults; GM; YPI-SV; Adolescent; Psychopathy
• ISSN: 0191-8869; 1873-3549
• DOI: 10.1016/j.paid.2022.112001

Psychopathy encompasses an aggregation of interpersonal, affective, and behavioral traits that have been shown to be important in identifying persistent and violent antisocial adults. However, psychopathic traits may start to manifest during adolescence and continue to evolve throughout the personal development towards adulthood. The Youth Psychopathic Traits Inventory (YPI) has been widely used to measure psychopathy in studies with children and adolescents, namely in forensic settings. We conducted a systematic review to establish reference values for YPI in children and adolescents both in forensic and community-dwelling samples. Studies related to the topic were obtained from multiple databases, through rigorous inclusion and exclusion criteria. Only papers with empirical and quantitative methodologies from scientific and academic publications were included. A total of 171 articles were identified and 40 were retained for this review. The results provided reference values by type of sample and sex, specifically pooled means, standard deviations, and variances. We also computed reference values for Europe, North America, and Asia, presenting pooled means, standard deviations, and variances in each case. This reference values can be useful for the application of the YPI and the interpretation of its results, both in clinical practice and in future research with children and adolescents. •The Youth Psychopathic Traits Inventory (YPI) has been extensive used.•YPI is an available screening measures to assess psychopathic traits in adolescents.•Meta-analytical procedures to identified references values for YPI.•Reference values for sample characteristics (e.g., community, forensic, sex, country).•Reference data is important to draw valid conclusions for clinical/forensic settings.