Perpetration of sibling aggression and sibling relationship quality in emerging adulthood

This study examined how emerging adults' perpetration of aggression toward a sibling closest in age was longitudinally associated with their sibling relationship quality. Emerging adults (N = 143; M_age = 19.62; 70% female) completed surveys online or by mail at two time points, 4 years apart. Of emerging adults, 25% perpetrated aggression against their closest‐in‐age sibling. Perpetration of sibling aggression was predictive 4 years later of less sibling warmth, involvement, and emotional help. None of the interactions with gender and sibling gender was significant. This study's findings demonstrate the importance of examining the consequences of perpetration of aggressive behavior toward a sibling for sibling relationship quality in emerging adulthood.     

Evaluating the Interpersonal Needs Questionnaire: Comparison of the Reliability,Factor Structure,and Predictive Validity across Five Versions

Five versions of the Interpersonal Needs Questionnaire (INQ), a self‐report measure of perceived burdensomeness and thwarted belongingness, have been used in recent studies (including 10‐, 12‐, 15‐, 18‐, and 25‐items). Findings regarding the associations between perceived burdensomeness, thwarted belongingness, and suicidal ideation using different versions have been mixed, potentially due to differences in measurement scales. This study evaluated factor structure, internal consistency, and concurrent predictive validity of these five versions in three samples. Samples 1 and 2 were comprised of 449 and 218 undergraduates, respectively; Sample 3 included 114 adolescent psychiatric inpatients. All versions demonstrated acceptable internal consistency. The 10‐item version and 15‐item version demonstrated the best, most consistent model fit in confirmatory factor analyses. Both perceived burdensomeness and thwarted belongingness consistently predicted concurrent suicidal ideation on the 10‐item INQ only. Future research should consider using the 15‐item or 10‐item versions.