Coming together: a perspective on relationships across the life span -- Relationships as outcomes and contexts -- Child-parent relationships -- A dynamic ecological systems perspective on emotion regulation development within the sibling relationship context -- Romantic and marital relationships -- Close relationships across the life span: toward a theory of relationship types -- Friendship across the life span: reciprocity in individual and relationship development -- The consequential stranger: peripheral relationships across the life span -- Stress in social relationships: coping and adaptation across the life span -- Social support and physical health across the life span: socioemotional influences -- Social cognition and social relationships -- Dyadic fits and transactions in personality and relationships -- Relational competence across the life span -- Social motivation across the lifespan: a goal-resource-congruence model of social relationships -- A lifetime of relationships mediated by technology.