Structural family theory was developed by Salvador Minuchin, an Argentine pediatrician. It focuses on the organization and structure of families, including subsystems, boundaries, roles and communication patterns. Problems arise when boundaries are too rigid or diffuse, members are disengaged or enmeshed, and the family cannot adapt to change. Structural family therapists use assessment and interventions like sculpting and role plays to realign family structures and empower subsystems. The theory aims to address issues related to poverty, discrimination and other social injustices impacting families. It has been effectively used for over 40 years to help families with multiple problems.