The Inventory of Parent and Peer Attachment is an index of three perceived parental security dimensions in late adolescents and young adults. The IPPA is intended to assess the extent to which youth perceive both trust and open lines of communication in their relationships with parents. IPPA items are also used to examine feelings of alienation from parents. Gullone and Robinson revised the wording of IPPA items with the aim to simplify the language for use in children and younger adolescents, while retaining a theoretically consistent scale (i.e., IPPA-Revised). Many scholars have used the IPPA and the IPPA-R to examine the association between perceived parental security and alcohol behaviors.