Psychometric Properties of the Inventory of Parents-Peer Attachment (IPPA) in Adolescents with Behavioural Problems

Background: The Inventory of Parental-Peer Attachment (IPPA) is an internationally recognized measure to assess the attachment of adolescents to their parents and peers. The objective of this study was to examine the psychometric properties of the IPPA in a sample of Spanish adolescents with behavioural problems. Method: The sample was composed of 294 Spanish adolescents (53% girls) with behavioural problems. The IPPA mother, father, and peer versions, along with other related measures, were administered. Results: The 25-item scale, distributed into three factors, was confirmed for both the mother and father versions but not for the peer version. The IPPA showed adequate values of reliability ranging from .79 to .86. Validity was demonstrated through correlations with emotional intelligence, antisocial behaviour, and aggressiveness. Conclusion: The three-factor version of the IPPA is a useful, reliable, and valid scale to assess the attachment of adolescents with problematic behaviours and their parents.