The developmental science literature is riven with respect to (a) parental similar versus different treatment of siblings and (b) sibling similarities and differences. Most methodologies in the field are flawed or confounded. To address these issues, this study employed a within-family longitudinal design to examine developmental processes of…

This study employs an intra-national and cross-national, prospective, and longitudinal design to examine age, gender, region, and country variation in group mean-level continuity and individual-differences stability of emotional availability in child-mother dyads. Altogether, 220 Argentine, Italian, and US American metropolitan and rural residence…

This study used a cross-national framework to examine country, region, and gender differences in emotional availability (EA), a prominent index of mutual socioemotional adaptation in the parent-child dyad. Altogether 220 Argentine, Italian, and U.S. mothers and their daughters and sons from both rural and metropolitan areas took part in home…