Developmental psychology aims to elucidate how children's early relationships influence their interactions with the world. Piaget's cognitive development theory is often noted when discussing development, and although his cognitive descriptions of decentering (i.e., perspective taking) were compelling, they neglected interpersonal contexts. Accordingly, Feffer conceptualized decentering within a social context. To expand on Feffer's consideration of the social context, the current study explored early parent-child bonds and their impact on child development, specifically interpersonal decentering, in adolescence. In the present secondary analysis of data from the Institute of Human Development longitudinal Guidance Study at the University of California, Berkeley, I hypothesized that, for both boys and girls, conflict with relatives and a parent's nervous instability would moderate the association between early strong parental bonds and more mature decentering at ages 12.5 and 18 years, and that more imaginative play, introspection, and better physical health would moderate the relationship between strong father-son bonds at age 21 months and the son's more mature decentering at age 12.5 and 18 years. The findings revealed that the association between strong father-son bonds at 21 months and the son's more mature decentering at age 12.5 was strongest when the son was less introspective compared to when the son was more introspective. When sons were in better health at ages 5-10 years and 11-17 years, their father-son bonds at age 21 months were more strongly related to more mature decentering at age 18 compared to sons who were in fair to poor health. The current study expands on the impact parental bonds, particularly paternal for sons, have on a child's social cognitive development.