The structure of aggression in conflict-prone couples: Validation of a measure of the Forms and Functions of Intimate Partner Aggression (FFIPA).

Intimate partner aggression (IPA) is a complex construct composed of the means and the motivations by which a person harms his or her intimate partner. Existing measures only assess forms of IPA perpetration while neglecting to measure the motivations for aggressing. The present study sought to fill this lacuna by adapting and validating an existing measure of the forms and functions of adolescent peer aggression to assess IPA perpetration in adults. This new measure-the Forms and Functions of Intimate Partner Aggression (FFIPA)-comprises 4 latent dimensions of IPA (i.e., overt, relational, proactive, and reactive). Participants were 341 heavy-drinking heterosexual couples (N = 682) with a recent history of psychological and/or physical IPA recruited from 2 metropolitan cities in the United States. The FFIPA demonstrated good model fit and internal validity. Unique patterns of convergent and criterion-related validity supported the 4 dimensions of the FFIPA. Results also indicated women perpetrated significantly more overt and relational aggression than men. Findings support the FFIPA as a valid measure of the forms and functions of IPA perpetration. More important, as the only instrument that parses the forms and functions of IPA perpetration, the FFIPA delineates the unique motivations of an aggressive partner separately from the form of his or her aggressive behavior(s). Further replication is needed to generalize this measure to nonconflictual and other types of intimate relationships. (PsycInfo Database Record (c) 2020 APA, all rights reserved).