Structural functionalism was the dominant sociological perspective in the 1950s. It focuses on how social structures shape human behavior and how social institutions work together in a society. Two leading theorists were Talcott Parsons and Robert Merton. Forerunners included Auguste Comte, Herbert Spencer, Karl Marx, and Emile Durkheim. Comte saw sociology as the scientific study of society and its development. Spencer viewed society as like a living organism with interdependent parts. Functionalism examines how institutions function to ensure society's survival. Parsons analyzed society's core functions of adaptation, goal attainment, integration, and latency.