Autoregressive and Cross-Lagged Associations Between Psychological Intimate Partner Aggression and Psychopathology in Newlyweds

Most research to date relies on cross-sectional data to identify associations between psychopathology (i.e., internalizing and externalizing disorders) and intimate partner aggression (IPA). Studies that utilize longitudinal data tend to survey only one member of a dyad, examine only perpetration or victimization, and/or use statistical methods that converge within- and between-person effects. The current study examines the associations between psychopathology, psychological IPA perpetration, and psychological IPA victimization at three time points over the course of 1 year in a sample of newlyweds. An autoregressive latent trajectory model with structured residuals (ALT-SR) tested the hypotheses that within-person internalizing and externalizing psychopathology would predict IPA perpetration and victimization at each subsequent time point, and IPA victimization would predict subsequent internalizing and externalizing symptoms. Results of the ALT-SR model did not support hypotheses. Rather, results suggest internalizing symptoms were negatively associated with externalizing symptoms at subsequent time points, and vice versa. IPA perpetration was positively associated with IPA victimization at the following time points. These results elucidate the interplay between psychopathology and IPA, suggesting that although these constructs show bivariate relationships with one another, psychopathology is not a significant within-person predictor of subsequent psychological IPA.