Organization development (OD) is a conceptual, organization-wide effort to improve an organization's effectiveness and ability to adapt to change. It uses applied behavioral science to help organizations better solve problems and renew themselves over time. OD aims to improve an organization's performance and self-renewal capacity through interventions that focus on organizational culture, leadership, and systems using collaborative methods like action research. Kurt Lewin is considered the founder of OD, establishing concepts of group dynamics and action research that underlie the field.