The document discusses social competencies and communication skills that are important for children in middle childhood between the ages of 10-15. It focuses on skills that help children achieve socially desired outcomes like peer competence, school readiness, and academic performance. Some key communication competencies discussed include caring behaviors, emotional support, argumentation and conflict management skills, understanding emotional display rules, and self-monitoring. Family socialization is also highlighted as the primary influence on children developing these important communication skills during middle childhood.