Within-Family Differences in Parent–Child Relations Across the Life Course

Despite a powerful social norm that parents should treat offspring equally, beginning in early childhood and continuing through adulthood, parents often differentiate among their children in such domains as closeness, support, and control. We review research on how parent–child relationships differ within families, focusing on issues of parental favoritism and differential treatment of children. We begin by examining within-family differences in childhood and adolescence and then explore differentiation by older parents among adult children. Overall, we find considerable similarities across the life course in the prevalence, predictors, and consequences of parents' differentiation among their offspring.